Home / 99,189.62-136,881.19-53,867.21

Finding the Fourth Proportional to 99,189.62, 136,881.19 and 53,867.21

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Solution

The fourth proportional to 99,189.62, 136,881.19 and 53,867.21 is: 74,336.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,189.62 : 136,881.19 = 53,867.21 : x
  2. Step 2: Convert to fraction form
    99,189.62/136,881.19 = 53,867.21/x
  3. Step 3: Cross multiply
    99,189.62x = 136,881.19 × 53,867.21
  4. Step 4: Simplify right side
    99,189.62x = 7,373,407,806.78
  5. Step 5: Solve for x
    x = 7,373,407,806.78/99,189.62
  6. Step 6: Final answer
    x = 74,336.49

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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.