Home / 126,374.31-174,478.46-78,646.95

Finding the Fourth Proportional to 126,374.31, 174,478.46 and 78,646.95

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Solution

The fourth proportional to 126,374.31, 174,478.46 and 78,646.95 is: 108,583.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,374.31 : 174,478.46 = 78,646.95 : x
  2. Step 2: Convert to fraction form
    126,374.31/174,478.46 = 78,646.95/x
  3. Step 3: Cross multiply
    126,374.31x = 174,478.46 × 78,646.95
  4. Step 4: Simplify right side
    126,374.31x = 13,722,198,326.46
  5. Step 5: Solve for x
    x = 13,722,198,326.46/126,374.31
  6. Step 6: Final answer
    x = 108,583.76

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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.