Home / 99,187.11-136,877.79-53,864.78

Finding the Fourth Proportional to 99,187.11, 136,877.79 and 53,864.78

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Solution

The fourth proportional to 99,187.11, 136,877.79 and 53,864.78 is: 74,333.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,187.11 : 136,877.79 = 53,864.78 : x
  2. Step 2: Convert to fraction form
    99,187.11/136,877.79 = 53,864.78/x
  3. Step 3: Cross multiply
    99,187.11x = 136,877.79 × 53,864.78
  4. Step 4: Simplify right side
    99,187.11x = 7,372,891,360.85
  5. Step 5: Solve for x
    x = 7,372,891,360.85/99,187.11
  6. Step 6: Final answer
    x = 74,333.16

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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.