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Finding the Fourth Proportional to 89,154.81, 123,046.24 and 55,174.24

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Solution

The fourth proportional to 89,154.81, 123,046.24 and 55,174.24 is: 76,148.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,154.81 : 123,046.24 = 55,174.24 : x
  2. Step 2: Convert to fraction form
    89,154.81/123,046.24 = 55,174.24/x
  3. Step 3: Cross multiply
    89,154.81x = 123,046.24 × 55,174.24
  4. Step 4: Simplify right side
    89,154.81x = 6,788,982,331.31
  5. Step 5: Solve for x
    x = 6,788,982,331.31/89,154.81
  6. Step 6: Final answer
    x = 76,148.25

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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.