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Finding the Fourth Proportional to 141,082.74, 211,347.18 and 81,793.80

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Solution

The fourth proportional to 141,082.74, 211,347.18 and 81,793.80 is: 122,530.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,082.74 : 211,347.18 = 81,793.80 : x
  2. Step 2: Convert to fraction form
    141,082.74/211,347.18 = 81,793.80/x
  3. Step 3: Cross multiply
    141,082.74x = 211,347.18 × 81,793.80
  4. Step 4: Simplify right side
    141,082.74x = 17,286,888,971.48
  5. Step 5: Solve for x
    x = 17,286,888,971.48/141,082.74
  6. Step 6: Final answer
    x = 122,530.15

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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.