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Finding the Fourth Proportional to 90,248.86, 135,225.32 and 63,906.32

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Solution

The fourth proportional to 90,248.86, 135,225.32 and 63,906.32 is: 95,754.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,248.86 : 135,225.32 = 63,906.32 : x
  2. Step 2: Convert to fraction form
    90,248.86/135,225.32 = 63,906.32/x
  3. Step 3: Cross multiply
    90,248.86x = 135,225.32 × 63,906.32
  4. Step 4: Simplify right side
    90,248.86x = 8,641,752,572.02
  5. Step 5: Solve for x
    x = 8,641,752,572.02/90,248.86
  6. Step 6: Final answer
    x = 95,754.70

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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.