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Finding the Fourth Proportional to 154,879.80, 232,321.32 and 66,077.88

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Solution

The fourth proportional to 154,879.80, 232,321.32 and 66,077.88 is: 99,117.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,879.80 : 232,321.32 = 66,077.88 : x
  2. Step 2: Convert to fraction form
    154,879.80/232,321.32 = 66,077.88/x
  3. Step 3: Cross multiply
    154,879.80x = 232,321.32 × 66,077.88
  4. Step 4: Simplify right side
    154,879.80x = 15,351,300,304.40
  5. Step 5: Solve for x
    x = 15,351,300,304.40/154,879.80
  6. Step 6: Final answer
    x = 99,117.51

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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.