Home / 99,400.91-137,171.79-54,079.29

Finding the Fourth Proportional to 99,400.91, 137,171.79 and 54,079.29

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Solution

The fourth proportional to 99,400.91, 137,171.79 and 54,079.29 is: 74,628.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,400.91 : 137,171.79 = 54,079.29 : x
  2. Step 2: Convert to fraction form
    99,400.91/137,171.79 = 54,079.29/x
  3. Step 3: Cross multiply
    99,400.91x = 137,171.79 × 54,079.29
  4. Step 4: Simplify right side
    99,400.91x = 7,418,153,011.23
  5. Step 5: Solve for x
    x = 7,418,153,011.23/99,400.91
  6. Step 6: Final answer
    x = 74,628.63

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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.