Home / 153,217.82-230,042.09-78,391.64

Finding the Fourth Proportional to 153,217.82, 230,042.09 and 78,391.64

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Solution

The fourth proportional to 153,217.82, 230,042.09 and 78,391.64 is: 117,697.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,217.82 : 230,042.09 = 78,391.64 : x
  2. Step 2: Convert to fraction form
    153,217.82/230,042.09 = 78,391.64/x
  3. Step 3: Cross multiply
    153,217.82x = 230,042.09 × 78,391.64
  4. Step 4: Simplify right side
    153,217.82x = 18,033,377,475.21
  5. Step 5: Solve for x
    x = 18,033,377,475.21/153,217.82
  6. Step 6: Final answer
    x = 117,697.65

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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.