Home / 128,025.27-176,706.50-77,766.39

Finding the Fourth Proportional to 128,025.27, 176,706.50 and 77,766.39

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Solution

The fourth proportional to 128,025.27, 176,706.50 and 77,766.39 is: 107,336.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,025.27 : 176,706.50 = 77,766.39 : x
  2. Step 2: Convert to fraction form
    128,025.27/176,706.50 = 77,766.39/x
  3. Step 3: Cross multiply
    128,025.27x = 176,706.50 × 77,766.39
  4. Step 4: Simplify right side
    128,025.27x = 13,741,826,205.70
  5. Step 5: Solve for x
    x = 13,741,826,205.70/128,025.27
  6. Step 6: Final answer
    x = 107,336.83

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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.