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Finding the Fourth Proportional to 187,139.73, 280,857.03 and 87,248.50

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Solution

The fourth proportional to 187,139.73, 280,857.03 and 87,248.50 is: 130,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,139.73 : 280,857.03 = 87,248.50 : x
  2. Step 2: Convert to fraction form
    187,139.73/280,857.03 = 87,248.50/x
  3. Step 3: Cross multiply
    187,139.73x = 280,857.03 × 87,248.50
  4. Step 4: Simplify right side
    187,139.73x = 24,504,354,581.96
  5. Step 5: Solve for x
    x = 24,504,354,581.96/187,139.73
  6. Step 6: Final answer
    x = 130,941.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.