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Finding the Fourth Proportional to 187,291.52, 280,965.20 and 68,953.76

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Solution

The fourth proportional to 187,291.52, 280,965.20 and 68,953.76 is: 103,440.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,291.52 : 280,965.20 = 68,953.76 : x
  2. Step 2: Convert to fraction form
    187,291.52/280,965.20 = 68,953.76/x
  3. Step 3: Cross multiply
    187,291.52x = 280,965.20 × 68,953.76
  4. Step 4: Simplify right side
    187,291.52x = 19,373,606,969.15
  5. Step 5: Solve for x
    x = 19,373,606,969.15/187,291.52
  6. Step 6: Final answer
    x = 103,440.92

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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.