Home / 128,306.28-192,483.72-58,191.12

Finding the Fourth Proportional to 128,306.28, 192,483.72 and 58,191.12

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Solution

The fourth proportional to 128,306.28, 192,483.72 and 58,191.12 is: 87,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,306.28 : 192,483.72 = 58,191.12 : x
  2. Step 2: Convert to fraction form
    128,306.28/192,483.72 = 58,191.12/x
  3. Step 3: Cross multiply
    128,306.28x = 192,483.72 × 58,191.12
  4. Step 4: Simplify right side
    128,306.28x = 11,200,843,248.57
  5. Step 5: Solve for x
    x = 11,200,843,248.57/128,306.28
  6. Step 6: Final answer
    x = 87,297.70

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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.