Home / 187,421.80-258,641.76-102,538.68

Finding the Fourth Proportional to 187,421.80, 258,641.76 and 102,538.68

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Solution

The fourth proportional to 187,421.80, 258,641.76 and 102,538.68 is: 141,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,421.80 : 258,641.76 = 102,538.68 : x
  2. Step 2: Convert to fraction form
    187,421.80/258,641.76 = 102,538.68/x
  3. Step 3: Cross multiply
    187,421.80x = 258,641.76 × 102,538.68
  4. Step 4: Simplify right side
    187,421.80x = 26,520,784,663.28
  5. Step 5: Solve for x
    x = 26,520,784,663.28/187,421.80
  6. Step 6: Final answer
    x = 141,503.20

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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.