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Finding the Fourth Proportional to 124,703.52, 187,079.68 and 45,818.40

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Solution

The fourth proportional to 124,703.52, 187,079.68 and 45,818.40 is: 68,736.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,703.52 : 187,079.68 = 45,818.40 : x
  2. Step 2: Convert to fraction form
    124,703.52/187,079.68 = 45,818.40/x
  3. Step 3: Cross multiply
    124,703.52x = 187,079.68 × 45,818.40
  4. Step 4: Simplify right side
    124,703.52x = 8,571,691,610.11
  5. Step 5: Solve for x
    x = 8,571,691,610.11/124,703.52
  6. Step 6: Final answer
    x = 68,736.57

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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.