Home / 86,224,218.30-129,336,327.45-79,988,643.90

Finding the Fourth Proportional to 86,224,218.30, 129,336,327.45 and 79,988,643.90

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Solution

The fourth proportional to 86,224,218.30, 129,336,327.45 and 79,988,643.90 is: 119,982,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,224,218.30 : 129,336,327.45 = 79,988,643.90 : x
  2. Step 2: Convert to fraction form
    86,224,218.30/129,336,327.45 = 79,988,643.90/x
  3. Step 3: Cross multiply
    86,224,218.30x = 129,336,327.45 × 79,988,643.90
  4. Step 4: Simplify right side
    86,224,218.30x = 10,345,437,439,731,846
  5. Step 5: Solve for x
    x = 10,345,437,439,731,846/86,224,218.30
  6. Step 6: Final answer
    x = 119,982,965.85

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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.