Home / 129,129.14-193,713.75-65,915.03

Finding the Fourth Proportional to 129,129.14, 193,713.75 and 65,915.03

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Solution

The fourth proportional to 129,129.14, 193,713.75 and 65,915.03 is: 98,882.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,129.14 : 193,713.75 = 65,915.03 : x
  2. Step 2: Convert to fraction form
    129,129.14/193,713.75 = 65,915.03/x
  3. Step 3: Cross multiply
    129,129.14x = 193,713.75 × 65,915.03
  4. Step 4: Simplify right side
    129,129.14x = 12,768,647,642.66
  5. Step 5: Solve for x
    x = 12,768,647,642.66/129,129.14
  6. Step 6: Final answer
    x = 98,882.77

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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.