Home / 99,979.12-149,938.38-52,568.66

Finding the Fourth Proportional to 99,979.12, 149,938.38 and 52,568.66

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Solution

The fourth proportional to 99,979.12, 149,938.38 and 52,568.66 is: 78,837.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,979.12 : 149,938.38 = 52,568.66 : x
  2. Step 2: Convert to fraction form
    99,979.12/149,938.38 = 52,568.66/x
  3. Step 3: Cross multiply
    99,979.12x = 149,938.38 × 52,568.66
  4. Step 4: Simplify right side
    99,979.12x = 7,882,059,719.17
  5. Step 5: Solve for x
    x = 7,882,059,719.17/99,979.12
  6. Step 6: Final answer
    x = 78,837.06

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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.