Home / 143,386.52-197,872.30-79,723.76

Finding the Fourth Proportional to 143,386.52, 197,872.30 and 79,723.76

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Solution

The fourth proportional to 143,386.52, 197,872.30 and 79,723.76 is: 110,018.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,386.52 : 197,872.30 = 79,723.76 : x
  2. Step 2: Convert to fraction form
    143,386.52/197,872.30 = 79,723.76/x
  3. Step 3: Cross multiply
    143,386.52x = 197,872.30 × 79,723.76
  4. Step 4: Simplify right side
    143,386.52x = 15,775,123,755.85
  5. Step 5: Solve for x
    x = 15,775,123,755.85/143,386.52
  6. Step 6: Final answer
    x = 110,018.18

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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.