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Finding the Fourth Proportional to 96,398.32, 133,071.60 and 72,530.88

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Solution

The fourth proportional to 96,398.32, 133,071.60 and 72,530.88 is: 100,124.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,398.32 : 133,071.60 = 72,530.88 : x
  2. Step 2: Convert to fraction form
    96,398.32/133,071.60 = 72,530.88/x
  3. Step 3: Cross multiply
    96,398.32x = 133,071.60 × 72,530.88
  4. Step 4: Simplify right side
    96,398.32x = 9,651,800,251.01
  5. Step 5: Solve for x
    x = 9,651,800,251.01/96,398.32
  6. Step 6: Final answer
    x = 100,124.15

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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.