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Finding the Fourth Proportional to 137,551.52, 189,822.12 and 89,776.64

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Solution

The fourth proportional to 137,551.52, 189,822.12 and 89,776.64 is: 123,892.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,551.52 : 189,822.12 = 89,776.64 : x
  2. Step 2: Convert to fraction form
    137,551.52/189,822.12 = 89,776.64/x
  3. Step 3: Cross multiply
    137,551.52x = 189,822.12 × 89,776.64
  4. Step 4: Simplify right side
    137,551.52x = 17,041,592,131.28
  5. Step 5: Solve for x
    x = 17,041,592,131.28/137,551.52
  6. Step 6: Final answer
    x = 123,892.43

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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.