Home / 91,556.19-126,360.34-66,144.76

Finding the Fourth Proportional to 91,556.19, 126,360.34 and 66,144.76

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Solution

The fourth proportional to 91,556.19, 126,360.34 and 66,144.76 is: 91,289.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,556.19 : 126,360.34 = 66,144.76 : x
  2. Step 2: Convert to fraction form
    91,556.19/126,360.34 = 66,144.76/x
  3. Step 3: Cross multiply
    91,556.19x = 126,360.34 × 66,144.76
  4. Step 4: Simplify right side
    91,556.19x = 8,358,073,881.56
  5. Step 5: Solve for x
    x = 8,358,073,881.56/91,556.19
  6. Step 6: Final answer
    x = 91,289.01

Related Problems

Find fourth proportional to 45,778.10, 63,180.17 and 33,072.38
Half scale
Find fourth proportional to 183,112.38, 252,720.68 and 132,289.52
Double scale
Find fourth proportional to 91,557.19, 126,361.72 and 66,145.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.