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Finding the Fourth Proportional to 109,740.88, 164,612.76 and 72,539.92

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Solution

The fourth proportional to 109,740.88, 164,612.76 and 72,539.92 is: 108,810.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,740.88 : 164,612.76 = 72,539.92 : x
  2. Step 2: Convert to fraction form
    109,740.88/164,612.76 = 72,539.92/x
  3. Step 3: Cross multiply
    109,740.88x = 164,612.76 × 72,539.92
  4. Step 4: Simplify right side
    109,740.88x = 11,940,996,441.38
  5. Step 5: Solve for x
    x = 11,940,996,441.38/109,740.88
  6. Step 6: Final answer
    x = 108,810.83

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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.