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Finding the Fourth Proportional to 187,457.67, 258,691.50 and 102,574.71

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Solution

The fourth proportional to 187,457.67, 258,691.50 and 102,574.71 is: 141,553.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,457.67 : 258,691.50 = 102,574.71 : x
  2. Step 2: Convert to fraction form
    187,457.67/258,691.50 = 102,574.71/x
  3. Step 3: Cross multiply
    187,457.67x = 258,691.50 × 102,574.71
  4. Step 4: Simplify right side
    187,457.67x = 26,535,205,591.97
  5. Step 5: Solve for x
    x = 26,535,205,591.97/187,457.67
  6. Step 6: Final answer
    x = 141,553.05

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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.