Home / 99,805.16-137,758.92-57,377.36

Finding the Fourth Proportional to 99,805.16, 137,758.92 and 57,377.36

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Solution

The fourth proportional to 99,805.16, 137,758.92 and 57,377.36 is: 79,196.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,805.16 : 137,758.92 = 57,377.36 : x
  2. Step 2: Convert to fraction form
    99,805.16/137,758.92 = 57,377.36/x
  3. Step 3: Cross multiply
    99,805.16x = 137,758.92 × 57,377.36
  4. Step 4: Simplify right side
    99,805.16x = 7,904,243,146.05
  5. Step 5: Solve for x
    x = 7,904,243,146.05/99,805.16
  6. Step 6: Final answer
    x = 79,196.74

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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.