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Finding the Fourth Proportional to 128,246.90, 192,373.65 and 60,763.10

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Solution

The fourth proportional to 128,246.90, 192,373.65 and 60,763.10 is: 91,146.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,246.90 : 192,373.65 = 60,763.10 : x
  2. Step 2: Convert to fraction form
    128,246.90/192,373.65 = 60,763.10/x
  3. Step 3: Cross multiply
    128,246.90x = 192,373.65 × 60,763.10
  4. Step 4: Simplify right side
    128,246.90x = 11,689,218,370.45
  5. Step 5: Solve for x
    x = 11,689,218,370.45/128,246.90
  6. Step 6: Final answer
    x = 91,146.21

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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.