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Finding the Fourth Proportional to 187,339.10, 281,100.91 and 87,484.78

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Solution

The fourth proportional to 187,339.10, 281,100.91 and 87,484.78 is: 131,270.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,339.10 : 281,100.91 = 87,484.78 : x
  2. Step 2: Convert to fraction form
    187,339.10/281,100.91 = 87,484.78/x
  3. Step 3: Cross multiply
    187,339.10x = 281,100.91 × 87,484.78
  4. Step 4: Simplify right side
    187,339.10x = 24,592,050,831.73
  5. Step 5: Solve for x
    x = 24,592,050,831.73/187,339.10
  6. Step 6: Final answer
    x = 131,270.25

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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.