Home / 99,508.25-137,319.42-54,186.79

Finding the Fourth Proportional to 99,508.25, 137,319.42 and 54,186.79

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Solution

The fourth proportional to 99,508.25, 137,319.42 and 54,186.79 is: 74,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,508.25 : 137,319.42 = 54,186.79 : x
  2. Step 2: Convert to fraction form
    99,508.25/137,319.42 = 54,186.79/x
  3. Step 3: Cross multiply
    99,508.25x = 137,319.42 × 54,186.79
  4. Step 4: Simplify right side
    99,508.25x = 7,440,898,574.46
  5. Step 5: Solve for x
    x = 7,440,898,574.46/99,508.25
  6. Step 6: Final answer
    x = 74,776.70

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1.5x scale

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.