Home / 138,612,934.52-191,288,114.84-75,887,986.04

Finding the Fourth Proportional to 138,612,934.52, 191,288,114.84 and 75,887,986.04

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Solution

The fourth proportional to 138,612,934.52, 191,288,114.84 and 75,887,986.04 is: 104,726,660.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,612,934.52 : 191,288,114.84 = 75,887,986.04 : x
  2. Step 2: Convert to fraction form
    138,612,934.52/191,288,114.84 = 75,887,986.04/x
  3. Step 3: Cross multiply
    138,612,934.52x = 191,288,114.84 × 75,887,986.04
  4. Step 4: Simplify right side
    138,612,934.52x = 14,516,469,788,595,838
  5. Step 5: Solve for x
    x = 14,516,469,788,595,838/138,612,934.52
  6. Step 6: Final answer
    x = 104,726,660.89

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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.