Home / 99,640.48-137,552.96-69,036.79

Finding the Fourth Proportional to 99,640.48, 137,552.96 and 69,036.79

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Solution

The fourth proportional to 99,640.48, 137,552.96 and 69,036.79 is: 95,304.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,640.48 : 137,552.96 = 69,036.79 : x
  2. Step 2: Convert to fraction form
    99,640.48/137,552.96 = 69,036.79/x
  3. Step 3: Cross multiply
    99,640.48x = 137,552.96 × 69,036.79
  4. Step 4: Simplify right side
    99,640.48x = 9,496,213,780.45
  5. Step 5: Solve for x
    x = 9,496,213,780.45/99,640.48
  6. Step 6: Final answer
    x = 95,304.78

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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.