Home / 187,644.57-281,424.64-86,345.45

Finding the Fourth Proportional to 187,644.57, 281,424.64 and 86,345.45

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Solution

The fourth proportional to 187,644.57, 281,424.64 and 86,345.45 is: 129,498.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,644.57 : 281,424.64 = 86,345.45 : x
  2. Step 2: Convert to fraction form
    187,644.57/281,424.64 = 86,345.45/x
  3. Step 3: Cross multiply
    187,644.57x = 281,424.64 × 86,345.45
  4. Step 4: Simplify right side
    187,644.57x = 24,299,737,141.91
  5. Step 5: Solve for x
    x = 24,299,737,141.91/187,644.57
  6. Step 6: Final answer
    x = 129,498.75

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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.