Home / 140,691.42-194,150.79-77,031.90

Finding the Fourth Proportional to 140,691.42, 194,150.79 and 77,031.90

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Solution

The fourth proportional to 140,691.42, 194,150.79 and 77,031.90 is: 106,302.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,691.42 : 194,150.79 = 77,031.90 : x
  2. Step 2: Convert to fraction form
    140,691.42/194,150.79 = 77,031.90/x
  3. Step 3: Cross multiply
    140,691.42x = 194,150.79 × 77,031.90
  4. Step 4: Simplify right side
    140,691.42x = 14,955,804,240.20
  5. Step 5: Solve for x
    x = 14,955,804,240.20/140,691.42
  6. Step 6: Final answer
    x = 106,302.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.