Home / 121,882.78-182,848.77-71,998.66

Finding the Fourth Proportional to 121,882.78, 182,848.77 and 71,998.66

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Solution

The fourth proportional to 121,882.78, 182,848.77 and 71,998.66 is: 108,012.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,882.78 : 182,848.77 = 71,998.66 : x
  2. Step 2: Convert to fraction form
    121,882.78/182,848.77 = 71,998.66/x
  3. Step 3: Cross multiply
    121,882.78x = 182,848.77 × 71,998.66
  4. Step 4: Simplify right side
    121,882.78x = 13,164,866,422.65
  5. Step 5: Solve for x
    x = 13,164,866,422.65/121,882.78
  6. Step 6: Final answer
    x = 108,012.52

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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.