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Finding the Fourth Proportional to 124,311.60, 186,337.80 and 68,065.20

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Solution

The fourth proportional to 124,311.60, 186,337.80 and 68,065.20 is: 102,026.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,311.60 : 186,337.80 = 68,065.20 : x
  2. Step 2: Convert to fraction form
    124,311.60/186,337.80 = 68,065.20/x
  3. Step 3: Cross multiply
    124,311.60x = 186,337.80 × 68,065.20
  4. Step 4: Simplify right side
    124,311.60x = 12,683,119,624.56
  5. Step 5: Solve for x
    x = 12,683,119,624.56/124,311.60
  6. Step 6: Final answer
    x = 102,026.84

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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.