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Finding the Fourth Proportional to 187,130.62, 280,755.87 and 67,106.71

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Solution

The fourth proportional to 187,130.62, 280,755.87 and 67,106.71 is: 100,681.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,130.62 : 280,755.87 = 67,106.71 : x
  2. Step 2: Convert to fraction form
    187,130.62/280,755.87 = 67,106.71/x
  3. Step 3: Cross multiply
    187,130.62x = 280,755.87 × 67,106.71
  4. Step 4: Simplify right side
    187,130.62x = 18,840,602,748.89
  5. Step 5: Solve for x
    x = 18,840,602,748.89/187,130.62
  6. Step 6: Final answer
    x = 100,681.56

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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.