Home / 128,240.38-176,966.22-70,876.73

Finding the Fourth Proportional to 128,240.38, 176,966.22 and 70,876.73

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Solution

The fourth proportional to 128,240.38, 176,966.22 and 70,876.73 is: 97,806.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,240.38 : 176,966.22 = 70,876.73 : x
  2. Step 2: Convert to fraction form
    128,240.38/176,966.22 = 70,876.73/x
  3. Step 3: Cross multiply
    128,240.38x = 176,966.22 × 70,876.73
  4. Step 4: Simplify right side
    128,240.38x = 12,542,787,303.58
  5. Step 5: Solve for x
    x = 12,542,787,303.58/128,240.38
  6. Step 6: Final answer
    x = 97,806.85

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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.