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Finding the Fourth Proportional to 154,645.20, 232,040.70 and 115,279.20

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Solution

The fourth proportional to 154,645.20, 232,040.70 and 115,279.20 is: 172,973.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,645.20 : 232,040.70 = 115,279.20 : x
  2. Step 2: Convert to fraction form
    154,645.20/232,040.70 = 115,279.20/x
  3. Step 3: Cross multiply
    154,645.20x = 232,040.70 × 115,279.20
  4. Step 4: Simplify right side
    154,645.20x = 26,749,466,263.44
  5. Step 5: Solve for x
    x = 26,749,466,263.44/154,645.20
  6. Step 6: Final answer
    x = 172,973.14

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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.