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Finding the Fourth Proportional to 137,460.62, 189,239 and 123,288.86

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Solution

The fourth proportional to 137,460.62, 189,239 and 123,288.86 is: 169,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,460.62 : 189,239 = 123,288.86 : x
  2. Step 2: Convert to fraction form
    137,460.62/189,239 = 123,288.86/x
  3. Step 3: Cross multiply
    137,460.62x = 189,239 × 123,288.86
  4. Step 4: Simplify right side
    137,460.62x = 23,331,060,577.54
  5. Step 5: Solve for x
    x = 23,331,060,577.54/137,460.62
  6. Step 6: Final answer
    x = 169,729.05

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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.