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Finding the Fourth Proportional to 134,711.48, 185,856.72 and 86,997.08

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Solution

The fourth proportional to 134,711.48, 185,856.72 and 86,997.08 is: 120,026.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,711.48 : 185,856.72 = 86,997.08 : x
  2. Step 2: Convert to fraction form
    134,711.48/185,856.72 = 86,997.08/x
  3. Step 3: Cross multiply
    134,711.48x = 185,856.72 × 86,997.08
  4. Step 4: Simplify right side
    134,711.48x = 16,168,991,938.38
  5. Step 5: Solve for x
    x = 16,168,991,938.38/134,711.48
  6. Step 6: Final answer
    x = 120,026.83

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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.