Home / 99,301.14-137,029.82-53,978.90

Finding the Fourth Proportional to 99,301.14, 137,029.82 and 53,978.90

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Solution

The fourth proportional to 99,301.14, 137,029.82 and 53,978.90 is: 74,487.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,301.14 : 137,029.82 = 53,978.90 : x
  2. Step 2: Convert to fraction form
    99,301.14/137,029.82 = 53,978.90/x
  3. Step 3: Cross multiply
    99,301.14x = 137,029.82 × 53,978.90
  4. Step 4: Simplify right side
    99,301.14x = 7,396,717,995.75
  5. Step 5: Solve for x
    x = 7,396,717,995.75/99,301.14
  6. Step 6: Final answer
    x = 74,487.75

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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.