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Finding the Fourth Proportional to 148,498.62, 204,912.89 and 91,140.32

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Solution

The fourth proportional to 148,498.62, 204,912.89 and 91,140.32 is: 125,764.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,498.62 : 204,912.89 = 91,140.32 : x
  2. Step 2: Convert to fraction form
    148,498.62/204,912.89 = 91,140.32/x
  3. Step 3: Cross multiply
    148,498.62x = 204,912.89 × 91,140.32
  4. Step 4: Simplify right side
    148,498.62x = 18,675,826,765.08
  5. Step 5: Solve for x
    x = 18,675,826,765.08/148,498.62
  6. Step 6: Final answer
    x = 125,764.32

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1.5x scale

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.