Home / 126,178.77-174,137.17-72,474.15

Finding the Fourth Proportional to 126,178.77, 174,137.17 and 72,474.15

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Solution

The fourth proportional to 126,178.77, 174,137.17 and 72,474.15 is: 100,020.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,178.77 : 174,137.17 = 72,474.15 : x
  2. Step 2: Convert to fraction form
    126,178.77/174,137.17 = 72,474.15/x
  3. Step 3: Cross multiply
    126,178.77x = 174,137.17 × 72,474.15
  4. Step 4: Simplify right side
    126,178.77x = 12,620,442,146.10
  5. Step 5: Solve for x
    x = 12,620,442,146.10/126,178.77
  6. Step 6: Final answer
    x = 100,020.33

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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.