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Finding the Fourth Proportional to 148,728.88, 205,152.37 and 88,256.71

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Solution

The fourth proportional to 148,728.88, 205,152.37 and 88,256.71 is: 121,738.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,728.88 : 205,152.37 = 88,256.71 : x
  2. Step 2: Convert to fraction form
    148,728.88/205,152.37 = 88,256.71/x
  3. Step 3: Cross multiply
    148,728.88x = 205,152.37 × 88,256.71
  4. Step 4: Simplify right side
    148,728.88x = 18,106,073,224.90
  5. Step 5: Solve for x
    x = 18,106,073,224.90/148,728.88
  6. Step 6: Final answer
    x = 121,738.79

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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.