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Finding the Fourth Proportional to 129,003.80, 193,505.70 and 101,010.20

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Solution

The fourth proportional to 129,003.80, 193,505.70 and 101,010.20 is: 151,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,003.80 : 193,505.70 = 101,010.20 : x
  2. Step 2: Convert to fraction form
    129,003.80/193,505.70 = 101,010.20/x
  3. Step 3: Cross multiply
    129,003.80x = 193,505.70 × 101,010.20
  4. Step 4: Simplify right side
    129,003.80x = 19,546,049,458.14
  5. Step 5: Solve for x
    x = 19,546,049,458.14/129,003.80
  6. Step 6: Final answer
    x = 151,515.30

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1.5x scale

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.