Home / 143,387.52-197,873.68-79,724.76

Finding the Fourth Proportional to 143,387.52, 197,873.68 and 79,724.76

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Solution

The fourth proportional to 143,387.52, 197,873.68 and 79,724.76 is: 110,019.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,387.52 : 197,873.68 = 79,724.76 : x
  2. Step 2: Convert to fraction form
    143,387.52/197,873.68 = 79,724.76/x
  3. Step 3: Cross multiply
    143,387.52x = 197,873.68 × 79,724.76
  4. Step 4: Simplify right side
    143,387.52x = 15,775,431,648.32
  5. Step 5: Solve for x
    x = 15,775,431,648.32/143,387.52
  6. Step 6: Final answer
    x = 110,019.56

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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.