Home / 123,869.76-185,882.40-115,899.36

Finding the Fourth Proportional to 123,869.76, 185,882.40 and 115,899.36

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Solution

The fourth proportional to 123,869.76, 185,882.40 and 115,899.36 is: 173,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,869.76 : 185,882.40 = 115,899.36 : x
  2. Step 2: Convert to fraction form
    123,869.76/185,882.40 = 115,899.36/x
  3. Step 3: Cross multiply
    123,869.76x = 185,882.40 × 115,899.36
  4. Step 4: Simplify right side
    123,869.76x = 21,543,651,195.26
  5. Step 5: Solve for x
    x = 21,543,651,195.26/123,869.76
  6. Step 6: Final answer
    x = 173,921.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.