Home / 123,677.69-170,678.95-69,961.66

Finding the Fourth Proportional to 123,677.69, 170,678.95 and 69,961.66

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Solution

The fourth proportional to 123,677.69, 170,678.95 and 69,961.66 is: 96,549.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,677.69 : 170,678.95 = 69,961.66 : x
  2. Step 2: Convert to fraction form
    123,677.69/170,678.95 = 69,961.66/x
  3. Step 3: Cross multiply
    123,677.69x = 170,678.95 × 69,961.66
  4. Step 4: Simplify right side
    123,677.69x = 11,940,982,067.46
  5. Step 5: Solve for x
    x = 11,940,982,067.46/123,677.69
  6. Step 6: Final answer
    x = 96,549.20

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1.5x scale

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.