Home / 99,387.18-137,151.84-56,942.97

Finding the Fourth Proportional to 99,387.18, 137,151.84 and 56,942.97

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Solution

The fourth proportional to 99,387.18, 137,151.84 and 56,942.97 is: 78,579.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,387.18 : 137,151.84 = 56,942.97 : x
  2. Step 2: Convert to fraction form
    99,387.18/137,151.84 = 56,942.97/x
  3. Step 3: Cross multiply
    99,387.18x = 137,151.84 × 56,942.97
  4. Step 4: Simplify right side
    99,387.18x = 7,809,833,110.56
  5. Step 5: Solve for x
    x = 7,809,833,110.56/99,387.18
  6. Step 6: Final answer
    x = 78,579.88

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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.