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Finding the Fourth Proportional to 108,539.46, 149,707.49 and 67,724.15

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Solution

The fourth proportional to 108,539.46, 149,707.49 and 67,724.15 is: 93,411.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,539.46 : 149,707.49 = 67,724.15 : x
  2. Step 2: Convert to fraction form
    108,539.46/149,707.49 = 67,724.15/x
  3. Step 3: Cross multiply
    108,539.46x = 149,707.49 × 67,724.15
  4. Step 4: Simplify right side
    108,539.46x = 10,138,811,421.73
  5. Step 5: Solve for x
    x = 10,138,811,421.73/108,539.46
  6. Step 6: Final answer
    x = 93,411.29

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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.