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Finding the Fourth Proportional to 142,003.99, 213,159.53 and 126,309.53

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Solution

The fourth proportional to 142,003.99, 213,159.53 and 126,309.53 is: 189,600.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,003.99 : 213,159.53 = 126,309.53 : x
  2. Step 2: Convert to fraction form
    142,003.99/213,159.53 = 126,309.53/x
  3. Step 3: Cross multiply
    142,003.99x = 213,159.53 × 126,309.53
  4. Step 4: Simplify right side
    142,003.99x = 26,924,080,049.32
  5. Step 5: Solve for x
    x = 26,924,080,049.32/142,003.99
  6. Step 6: Final answer
    x = 189,600.87

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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.