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Finding the Fourth Proportional to 108,487.76, 149,728.80 and 60,744.18

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Solution

The fourth proportional to 108,487.76, 149,728.80 and 60,744.18 is: 83,835.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,487.76 : 149,728.80 = 60,744.18 : x
  2. Step 2: Convert to fraction form
    108,487.76/149,728.80 = 60,744.18/x
  3. Step 3: Cross multiply
    108,487.76x = 149,728.80 × 60,744.18
  4. Step 4: Simplify right side
    108,487.76x = 9,095,153,178.38
  5. Step 5: Solve for x
    x = 9,095,153,178.38/108,487.76
  6. Step 6: Final answer
    x = 83,835.75

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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.