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Finding the Fourth Proportional to 128,246.85, 192,373.61 and 60,763.10

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Solution

The fourth proportional to 128,246.85, 192,373.61 and 60,763.10 is: 91,146.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,246.85 : 192,373.61 = 60,763.10 : x
  2. Step 2: Convert to fraction form
    128,246.85/192,373.61 = 60,763.10/x
  3. Step 3: Cross multiply
    128,246.85x = 192,373.61 × 60,763.10
  4. Step 4: Simplify right side
    128,246.85x = 11,689,215,636.11
  5. Step 5: Solve for x
    x = 11,689,215,636.11/128,246.85
  6. Step 6: Final answer
    x = 91,146.22

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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.