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Finding the Fourth Proportional to 361,835.68, 542,802.88 and 125,114.80

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Solution

The fourth proportional to 361,835.68, 542,802.88 and 125,114.80 is: 187,689.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,835.68 : 542,802.88 = 125,114.80 : x
  2. Step 2: Convert to fraction form
    361,835.68/542,802.88 = 125,114.80/x
  3. Step 3: Cross multiply
    361,835.68x = 542,802.88 × 125,114.80
  4. Step 4: Simplify right side
    361,835.68x = 67,912,673,770.62
  5. Step 5: Solve for x
    x = 67,912,673,770.62/361,835.68
  6. Step 6: Final answer
    x = 187,689.27

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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.