Home / 128,135.25-176,826.62-74,423.73

Finding the Fourth Proportional to 128,135.25, 176,826.62 and 74,423.73

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Solution

The fourth proportional to 128,135.25, 176,826.62 and 74,423.73 is: 102,704.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,135.25 : 176,826.62 = 74,423.73 : x
  2. Step 2: Convert to fraction form
    128,135.25/176,826.62 = 74,423.73/x
  3. Step 3: Cross multiply
    128,135.25x = 176,826.62 × 74,423.73
  4. Step 4: Simplify right side
    128,135.25x = 13,160,096,623.69
  5. Step 5: Solve for x
    x = 13,160,096,623.69/128,135.25
  6. Step 6: Final answer
    x = 102,704.73

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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.