Home / 128,058.38-192,116.13-39,320.85

Finding the Fourth Proportional to 128,058.38, 192,116.13 and 39,320.85

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Solution

The fourth proportional to 128,058.38, 192,116.13 and 39,320.85 is: 58,990.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,058.38 : 192,116.13 = 39,320.85 : x
  2. Step 2: Convert to fraction form
    128,058.38/192,116.13 = 39,320.85/x
  3. Step 3: Cross multiply
    128,058.38x = 192,116.13 × 39,320.85
  4. Step 4: Simplify right side
    128,058.38x = 7,554,169,530.31
  5. Step 5: Solve for x
    x = 7,554,169,530.31/128,058.38
  6. Step 6: Final answer
    x = 58,990.04

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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.