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Finding the Fourth Proportional to 124,501.60, 186,622.80 and 68,255.20

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Solution

The fourth proportional to 124,501.60, 186,622.80 and 68,255.20 is: 102,311.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,501.60 : 186,622.80 = 68,255.20 : x
  2. Step 2: Convert to fraction form
    124,501.60/186,622.80 = 68,255.20/x
  3. Step 3: Cross multiply
    124,501.60x = 186,622.80 × 68,255.20
  4. Step 4: Simplify right side
    124,501.60x = 12,737,976,538.56
  5. Step 5: Solve for x
    x = 12,737,976,538.56/124,501.60
  6. Step 6: Final answer
    x = 102,311.75

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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.