Home / 129,463.79-194,214.78-66,319.61

Finding the Fourth Proportional to 129,463.79, 194,214.78 and 66,319.61

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Solution

The fourth proportional to 129,463.79, 194,214.78 and 66,319.61 is: 99,489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,463.79 : 194,214.78 = 66,319.61 : x
  2. Step 2: Convert to fraction form
    129,463.79/194,214.78 = 66,319.61/x
  3. Step 3: Cross multiply
    129,463.79x = 194,214.78 × 66,319.61
  4. Step 4: Simplify right side
    129,463.79x = 12,880,247,494.76
  5. Step 5: Solve for x
    x = 12,880,247,494.76/129,463.79
  6. Step 6: Final answer
    x = 99,489.19

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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.