Home / 187,630.72-281,444.32-81,090

Finding the Fourth Proportional to 187,630.72, 281,444.32 and 81,090

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Solution

The fourth proportional to 187,630.72, 281,444.32 and 81,090 is: 121,634.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,630.72 : 281,444.32 = 81,090 : x
  2. Step 2: Convert to fraction form
    187,630.72/281,444.32 = 81,090/x
  3. Step 3: Cross multiply
    187,630.72x = 281,444.32 × 81,090
  4. Step 4: Simplify right side
    187,630.72x = 22,822,319,908.80
  5. Step 5: Solve for x
    x = 22,822,319,908.80/187,630.72
  6. Step 6: Final answer
    x = 121,634.24

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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.