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Finding the Fourth Proportional to 128,470.96, 192,574.86 and 44,205.76

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Solution

The fourth proportional to 128,470.96, 192,574.86 and 44,205.76 is: 66,263.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,470.96 : 192,574.86 = 44,205.76 : x
  2. Step 2: Convert to fraction form
    128,470.96/192,574.86 = 44,205.76/x
  3. Step 3: Cross multiply
    128,470.96x = 192,574.86 × 44,205.76
  4. Step 4: Simplify right side
    128,470.96x = 8,512,918,043.19
  5. Step 5: Solve for x
    x = 8,512,918,043.19/128,470.96
  6. Step 6: Final answer
    x = 66,263.36

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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.