Home / 99,722.07-137,613.06-54,398.79

Finding the Fourth Proportional to 99,722.07, 137,613.06 and 54,398.79

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Solution

The fourth proportional to 99,722.07, 137,613.06 and 54,398.79 is: 75,068.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,722.07 : 137,613.06 = 54,398.79 : x
  2. Step 2: Convert to fraction form
    99,722.07/137,613.06 = 54,398.79/x
  3. Step 3: Cross multiply
    99,722.07x = 137,613.06 × 54,398.79
  4. Step 4: Simplify right side
    99,722.07x = 7,485,983,952.20
  5. Step 5: Solve for x
    x = 7,485,983,952.20/99,722.07
  6. Step 6: Final answer
    x = 75,068.48

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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.