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Finding the Fourth Proportional to 128,015.91, 192,042.88 and 41,432.80

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Solution

The fourth proportional to 128,015.91, 192,042.88 and 41,432.80 is: 62,155.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,015.91 : 192,042.88 = 41,432.80 : x
  2. Step 2: Convert to fraction form
    128,015.91/192,042.88 = 41,432.80/x
  3. Step 3: Cross multiply
    128,015.91x = 192,042.88 × 41,432.80
  4. Step 4: Simplify right side
    128,015.91x = 7,956,874,238.46
  5. Step 5: Solve for x
    x = 7,956,874,238.46/128,015.91
  6. Step 6: Final answer
    x = 62,155.35

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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.