Home / 129,126.42-193,748.06-65,913.90

Finding the Fourth Proportional to 129,126.42, 193,748.06 and 65,913.90

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Solution

The fourth proportional to 129,126.42, 193,748.06 and 65,913.90 is: 98,900.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,126.42 : 193,748.06 = 65,913.90 : x
  2. Step 2: Convert to fraction form
    129,126.42/193,748.06 = 65,913.90/x
  3. Step 3: Cross multiply
    129,126.42x = 193,748.06 × 65,913.90
  4. Step 4: Simplify right side
    129,126.42x = 12,770,690,252.03
  5. Step 5: Solve for x
    x = 12,770,690,252.03/129,126.42
  6. Step 6: Final answer
    x = 98,900.68

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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.