Home / 99,839.10-137,543.82-69,569.51

Finding the Fourth Proportional to 99,839.10, 137,543.82 and 69,569.51

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Solution

The fourth proportional to 99,839.10, 137,543.82 and 69,569.51 is: 95,842.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,839.10 : 137,543.82 = 69,569.51 : x
  2. Step 2: Convert to fraction form
    99,839.10/137,543.82 = 69,569.51/x
  3. Step 3: Cross multiply
    99,839.10x = 137,543.82 × 69,569.51
  4. Step 4: Simplify right side
    99,839.10x = 9,568,855,473.21
  5. Step 5: Solve for x
    x = 9,568,855,473.21/99,839.10
  6. Step 6: Final answer
    x = 95,842.77

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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.