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Finding the Fourth Proportional to 124,881.80, 187,257.90 and 45,955.40

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Solution

The fourth proportional to 124,881.80, 187,257.90 and 45,955.40 is: 68,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,881.80 : 187,257.90 = 45,955.40 : x
  2. Step 2: Convert to fraction form
    124,881.80/187,257.90 = 45,955.40/x
  3. Step 3: Cross multiply
    124,881.80x = 187,257.90 × 45,955.40
  4. Step 4: Simplify right side
    124,881.80x = 8,605,511,697.66
  5. Step 5: Solve for x
    x = 8,605,511,697.66/124,881.80
  6. Step 6: Final answer
    x = 68,909.25

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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.