Home / 102,540.28-141,505.38-57,215.50

Finding the Fourth Proportional to 102,540.28, 141,505.38 and 57,215.50

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Solution

The fourth proportional to 102,540.28, 141,505.38 and 57,215.50 is: 78,957.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,540.28 : 141,505.38 = 57,215.50 : x
  2. Step 2: Convert to fraction form
    102,540.28/141,505.38 = 57,215.50/x
  3. Step 3: Cross multiply
    102,540.28x = 141,505.38 × 57,215.50
  4. Step 4: Simplify right side
    102,540.28x = 8,096,301,069.39
  5. Step 5: Solve for x
    x = 8,096,301,069.39/102,540.28
  6. Step 6: Final answer
    x = 78,957.27

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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.