Home / 128,316.12-192,470.94-34,819.44

Finding the Fourth Proportional to 128,316.12, 192,470.94 and 34,819.44

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Solution

The fourth proportional to 128,316.12, 192,470.94 and 34,819.44 is: 52,228.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,316.12 : 192,470.94 = 34,819.44 : x
  2. Step 2: Convert to fraction form
    128,316.12/192,470.94 = 34,819.44/x
  3. Step 3: Cross multiply
    128,316.12x = 192,470.94 × 34,819.44
  4. Step 4: Simplify right side
    128,316.12x = 6,701,730,347.07
  5. Step 5: Solve for x
    x = 6,701,730,347.07/128,316.12
  6. Step 6: Final answer
    x = 52,228.28

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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.