Home / 187,839.73-281,670.40-108,978.13

Finding the Fourth Proportional to 187,839.73, 281,670.40 and 108,978.13

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Solution

The fourth proportional to 187,839.73, 281,670.40 and 108,978.13 is: 163,415.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,839.73 : 281,670.40 = 108,978.13 : x
  2. Step 2: Convert to fraction form
    187,839.73/281,670.40 = 108,978.13/x
  3. Step 3: Cross multiply
    187,839.73x = 281,670.40 × 108,978.13
  4. Step 4: Simplify right side
    187,839.73x = 30,695,913,468.35
  5. Step 5: Solve for x
    x = 30,695,913,468.35/187,839.73
  6. Step 6: Final answer
    x = 163,415.45

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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.