Home / 128,320.85-192,479.15-38,363.77

Finding the Fourth Proportional to 128,320.85, 192,479.15 and 38,363.77

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Solution

The fourth proportional to 128,320.85, 192,479.15 and 38,363.77 is: 57,545.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,320.85 : 192,479.15 = 38,363.77 : x
  2. Step 2: Convert to fraction form
    128,320.85/192,479.15 = 38,363.77/x
  3. Step 3: Cross multiply
    128,320.85x = 192,479.15 × 38,363.77
  4. Step 4: Simplify right side
    128,320.85x = 7,384,225,840.40
  5. Step 5: Solve for x
    x = 7,384,225,840.40/128,320.85
  6. Step 6: Final answer
    x = 57,545.02

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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.