Home / 140,530.38-193,934.82-76,872.30

Finding the Fourth Proportional to 140,530.38, 193,934.82 and 76,872.30

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Solution

The fourth proportional to 140,530.38, 193,934.82 and 76,872.30 is: 106,085.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,530.38 : 193,934.82 = 76,872.30 : x
  2. Step 2: Convert to fraction form
    140,530.38/193,934.82 = 76,872.30/x
  3. Step 3: Cross multiply
    140,530.38x = 193,934.82 × 76,872.30
  4. Step 4: Simplify right side
    140,530.38x = 14,908,215,663.49
  5. Step 5: Solve for x
    x = 14,908,215,663.49/140,530.38
  6. Step 6: Final answer
    x = 106,085.36

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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.