Home / 99,177.11-148,578.10-76,881.25

Finding the Fourth Proportional to 99,177.11, 148,578.10 and 76,881.25

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Solution

The fourth proportional to 99,177.11, 148,578.10 and 76,881.25 is: 115,176.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,177.11 : 148,578.10 = 76,881.25 : x
  2. Step 2: Convert to fraction form
    99,177.11/148,578.10 = 76,881.25/x
  3. Step 3: Cross multiply
    99,177.11x = 148,578.10 × 76,881.25
  4. Step 4: Simplify right side
    99,177.11x = 11,422,870,044.14
  5. Step 5: Solve for x
    x = 11,422,870,044.14/99,177.11
  6. Step 6: Final answer
    x = 115,176.48

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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.