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Finding the Fourth Proportional to 128,098.90, 192,048.85 and 83,025.10

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Solution

The fourth proportional to 128,098.90, 192,048.85 and 83,025.10 is: 124,473.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,098.90 : 192,048.85 = 83,025.10 : x
  2. Step 2: Convert to fraction form
    128,098.90/192,048.85 = 83,025.10/x
  3. Step 3: Cross multiply
    128,098.90x = 192,048.85 × 83,025.10
  4. Step 4: Simplify right side
    128,098.90x = 15,944,874,976.14
  5. Step 5: Solve for x
    x = 15,944,874,976.14/128,098.90
  6. Step 6: Final answer
    x = 124,473.16

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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.