Home / 128,124.18-192,616.38-103,338.18

Finding the Fourth Proportional to 128,124.18, 192,616.38 and 103,338.18

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Solution

The fourth proportional to 128,124.18, 192,616.38 and 103,338.18 is: 155,354.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,124.18 : 192,616.38 = 103,338.18 : x
  2. Step 2: Convert to fraction form
    128,124.18/192,616.38 = 103,338.18/x
  3. Step 3: Cross multiply
    128,124.18x = 192,616.38 × 103,338.18
  4. Step 4: Simplify right side
    128,124.18x = 19,904,626,147.39
  5. Step 5: Solve for x
    x = 19,904,626,147.39/128,124.18
  6. Step 6: Final answer
    x = 155,354.17

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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.