Home / 99,979.62-149,939.13-52,569.16

Finding the Fourth Proportional to 99,979.62, 149,939.13 and 52,569.16

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Solution

The fourth proportional to 99,979.62, 149,939.13 and 52,569.16 is: 78,837.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,979.62 : 149,939.13 = 52,569.16 : x
  2. Step 2: Convert to fraction form
    99,979.62/149,939.13 = 52,569.16/x
  3. Step 3: Cross multiply
    99,979.62x = 149,939.13 × 52,569.16
  4. Step 4: Simplify right side
    99,979.62x = 7,882,174,115.23
  5. Step 5: Solve for x
    x = 7,882,174,115.23/99,979.62
  6. Step 6: Final answer
    x = 78,837.81

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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.