Home / 128,035.30-192,139.35-83,553.70

Finding the Fourth Proportional to 128,035.30, 192,139.35 and 83,553.70

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Solution

The fourth proportional to 128,035.30, 192,139.35 and 83,553.70 is: 125,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,035.30 : 192,139.35 = 83,553.70 : x
  2. Step 2: Convert to fraction form
    128,035.30/192,139.35 = 83,553.70/x
  3. Step 3: Cross multiply
    128,035.30x = 192,139.35 × 83,553.70
  4. Step 4: Simplify right side
    128,035.30x = 16,053,953,608.10
  5. Step 5: Solve for x
    x = 16,053,953,608.10/128,035.30
  6. Step 6: Final answer
    x = 125,386.93

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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.