Home / 129,272.76-194,090.72-66,138.14

Finding the Fourth Proportional to 129,272.76, 194,090.72 and 66,138.14

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Solution

The fourth proportional to 129,272.76, 194,090.72 and 66,138.14 is: 99,300.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,272.76 : 194,090.72 = 66,138.14 : x
  2. Step 2: Convert to fraction form
    129,272.76/194,090.72 = 66,138.14/x
  3. Step 3: Cross multiply
    129,272.76x = 194,090.72 × 66,138.14
  4. Step 4: Simplify right side
    129,272.76x = 12,836,799,366.60
  5. Step 5: Solve for x
    x = 12,836,799,366.60/129,272.76
  6. Step 6: Final answer
    x = 99,300.11

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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.