Home / 90,402.48-135,428.76-69,523.92

Finding the Fourth Proportional to 90,402.48, 135,428.76 and 69,523.92

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Solution

The fourth proportional to 90,402.48, 135,428.76 and 69,523.92 is: 104,151.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,402.48 : 135,428.76 = 69,523.92 : x
  2. Step 2: Convert to fraction form
    90,402.48/135,428.76 = 69,523.92/x
  3. Step 3: Cross multiply
    90,402.48x = 135,428.76 × 69,523.92
  4. Step 4: Simplify right side
    90,402.48x = 9,415,538,275.94
  5. Step 5: Solve for x
    x = 9,415,538,275.94/90,402.48
  6. Step 6: Final answer
    x = 104,151.33

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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.