Home / 126,139.73-174,071.89-68,780.04

Finding the Fourth Proportional to 126,139.73, 174,071.89 and 68,780.04

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Solution

The fourth proportional to 126,139.73, 174,071.89 and 68,780.04 is: 94,915.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,139.73 : 174,071.89 = 68,780.04 : x
  2. Step 2: Convert to fraction form
    126,139.73/174,071.89 = 68,780.04/x
  3. Step 3: Cross multiply
    126,139.73x = 174,071.89 × 68,780.04
  4. Step 4: Simplify right side
    126,139.73x = 11,972,670,514.77
  5. Step 5: Solve for x
    x = 11,972,670,514.77/126,139.73
  6. Step 6: Final answer
    x = 94,915.94

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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.