Home / 126,885.28-190,405.68-100,680.16

Finding the Fourth Proportional to 126,885.28, 190,405.68 and 100,680.16

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Solution

The fourth proportional to 126,885.28, 190,405.68 and 100,680.16 is: 151,081.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,885.28 : 190,405.68 = 100,680.16 : x
  2. Step 2: Convert to fraction form
    126,885.28/190,405.68 = 100,680.16/x
  3. Step 3: Cross multiply
    126,885.28x = 190,405.68 × 100,680.16
  4. Step 4: Simplify right side
    126,885.28x = 19,170,074,327.31
  5. Step 5: Solve for x
    x = 19,170,074,327.31/126,885.28
  6. Step 6: Final answer
    x = 151,081.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.