Home / 123,619.03-170,565.65-83,407.39

Finding the Fourth Proportional to 123,619.03, 170,565.65 and 83,407.39

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Solution

The fourth proportional to 123,619.03, 170,565.65 and 83,407.39 is: 115,082.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,619.03 : 170,565.65 = 83,407.39 : x
  2. Step 2: Convert to fraction form
    123,619.03/170,565.65 = 83,407.39/x
  3. Step 3: Cross multiply
    123,619.03x = 170,565.65 × 83,407.39
  4. Step 4: Simplify right side
    123,619.03x = 14,226,435,273.12
  5. Step 5: Solve for x
    x = 14,226,435,273.12/123,619.03
  6. Step 6: Final answer
    x = 115,082.89

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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.