Home / 75,138.10-112,665.03-51,472.38

Finding the Fourth Proportional to 75,138.10, 112,665.03 and 51,472.38

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Solution

The fourth proportional to 75,138.10, 112,665.03 and 51,472.38 is: 77,179.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,138.10 : 112,665.03 = 51,472.38 : x
  2. Step 2: Convert to fraction form
    75,138.10/112,665.03 = 51,472.38/x
  3. Step 3: Cross multiply
    75,138.10x = 112,665.03 × 51,472.38
  4. Step 4: Simplify right side
    75,138.10x = 5,799,137,236.87
  5. Step 5: Solve for x
    x = 5,799,137,236.87/75,138.10
  6. Step 6: Final answer
    x = 77,179.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.