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Finding the Fourth Proportional to 109,663.80, 151,406.40 and 89,568.90

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Solution

The fourth proportional to 109,663.80, 151,406.40 and 89,568.90 is: 123,662.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,663.80 : 151,406.40 = 89,568.90 : x
  2. Step 2: Convert to fraction form
    109,663.80/151,406.40 = 89,568.90/x
  3. Step 3: Cross multiply
    109,663.80x = 151,406.40 × 89,568.90
  4. Step 4: Simplify right side
    109,663.80x = 13,561,304,700.96
  5. Step 5: Solve for x
    x = 13,561,304,700.96/109,663.80
  6. Step 6: Final answer
    x = 123,662.55

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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.