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Finding the Fourth Proportional to 128,487.32, 192,743.88 and 44,236.33

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Solution

The fourth proportional to 128,487.32, 192,743.88 and 44,236.33 is: 66,358.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,487.32 : 192,743.88 = 44,236.33 : x
  2. Step 2: Convert to fraction form
    128,487.32/192,743.88 = 44,236.33/x
  3. Step 3: Cross multiply
    128,487.32x = 192,743.88 × 44,236.33
  4. Step 4: Simplify right side
    128,487.32x = 8,526,282,287.98
  5. Step 5: Solve for x
    x = 8,526,282,287.98/128,487.32
  6. Step 6: Final answer
    x = 66,358.94

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1.5x scale

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.