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Finding the Fourth Proportional to 104,565.30, 156,637.35 and 72,867.30

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Solution

The fourth proportional to 104,565.30, 156,637.35 and 72,867.30 is: 109,154.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,565.30 : 156,637.35 = 72,867.30 : x
  2. Step 2: Convert to fraction form
    104,565.30/156,637.35 = 72,867.30/x
  3. Step 3: Cross multiply
    104,565.30x = 156,637.35 × 72,867.30
  4. Step 4: Simplify right side
    104,565.30x = 11,413,740,773.66
  5. Step 5: Solve for x
    x = 11,413,740,773.66/104,565.30
  6. Step 6: Final answer
    x = 109,154.19

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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.