Home / 99,686.28-137,566.41-57,243.90

Finding the Fourth Proportional to 99,686.28, 137,566.41 and 57,243.90

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Solution

The fourth proportional to 99,686.28, 137,566.41 and 57,243.90 is: 78,996.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,686.28 : 137,566.41 = 57,243.90 : x
  2. Step 2: Convert to fraction form
    99,686.28/137,566.41 = 57,243.90/x
  3. Step 3: Cross multiply
    99,686.28x = 137,566.41 × 57,243.90
  4. Step 4: Simplify right side
    99,686.28x = 7,874,837,817.40
  5. Step 5: Solve for x
    x = 7,874,837,817.40/99,686.28
  6. Step 6: Final answer
    x = 78,996.21

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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.