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Finding the Fourth Proportional to 187,671.72, 258,987.11 and 101,631.38

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Solution

The fourth proportional to 187,671.72, 258,987.11 and 101,631.38 is: 140,251.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,671.72 : 258,987.11 = 101,631.38 : x
  2. Step 2: Convert to fraction form
    187,671.72/258,987.11 = 101,631.38/x
  3. Step 3: Cross multiply
    187,671.72x = 258,987.11 × 101,631.38
  4. Step 4: Simplify right side
    187,671.72x = 26,321,215,588.42
  5. Step 5: Solve for x
    x = 26,321,215,588.42/187,671.72
  6. Step 6: Final answer
    x = 140,251.37

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1.5x scale

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.