Home / 131,229,675.40-181,098,471.72-72,491,123.56

Finding the Fourth Proportional to 131,229,675.40, 181,098,471.72 and 72,491,123.56

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Solution

The fourth proportional to 131,229,675.40, 181,098,471.72 and 72,491,123.56 is: 100,038,589.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,229,675.40 : 181,098,471.72 = 72,491,123.56 : x
  2. Step 2: Convert to fraction form
    131,229,675.40/181,098,471.72 = 72,491,123.56/x
  3. Step 3: Cross multiply
    131,229,675.40x = 181,098,471.72 × 72,491,123.56
  4. Step 4: Simplify right side
    131,229,675.40x = 13,128,031,689,981,686
  5. Step 5: Solve for x
    x = 13,128,031,689,981,686/131,229,675.40
  6. Step 6: Final answer
    x = 100,038,589.98

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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.