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Finding the Fourth Proportional to 124,525.60, 186,658.80 and 68,279.20

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Solution

The fourth proportional to 124,525.60, 186,658.80 and 68,279.20 is: 102,347.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,525.60 : 186,658.80 = 68,279.20 : x
  2. Step 2: Convert to fraction form
    124,525.60/186,658.80 = 68,279.20/x
  3. Step 3: Cross multiply
    124,525.60x = 186,658.80 × 68,279.20
  4. Step 4: Simplify right side
    124,525.60x = 12,744,913,536.96
  5. Step 5: Solve for x
    x = 12,744,913,536.96/124,525.60
  6. Step 6: Final answer
    x = 102,347.74

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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.