Home / 91,888.20-126,840.78-89,360.16

Finding the Fourth Proportional to 91,888.20, 126,840.78 and 89,360.16

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Solution

The fourth proportional to 91,888.20, 126,840.78 and 89,360.16 is: 123,351.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,888.20 : 126,840.78 = 89,360.16 : x
  2. Step 2: Convert to fraction form
    91,888.20/126,840.78 = 89,360.16/x
  3. Step 3: Cross multiply
    91,888.20x = 126,840.78 × 89,360.16
  4. Step 4: Simplify right side
    91,888.20x = 11,334,512,395.32
  5. Step 5: Solve for x
    x = 11,334,512,395.32/91,888.20
  6. Step 6: Final answer
    x = 123,351.12

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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.