Home / 115,396,613.88-172,820,141.28-66,771,993.12

Finding the Fourth Proportional to 115,396,613.88, 172,820,141.28 and 66,771,993.12

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Solution

The fourth proportional to 115,396,613.88, 172,820,141.28 and 66,771,993.12 is: 99,998,993.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,396,613.88 : 172,820,141.28 = 66,771,993.12 : x
  2. Step 2: Convert to fraction form
    115,396,613.88/172,820,141.28 = 66,771,993.12/x
  3. Step 3: Cross multiply
    115,396,613.88x = 172,820,141.28 × 66,771,993.12
  4. Step 4: Simplify right side
    115,396,613.88x = 11,539,545,284,545,588
  5. Step 5: Solve for x
    x = 11,539,545,284,545,588/115,396,613.88
  6. Step 6: Final answer
    x = 99,998,993.87

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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.