Home / 139,279.85-192,206.18-75,617.65

Finding the Fourth Proportional to 139,279.85, 192,206.18 and 75,617.65

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Solution

The fourth proportional to 139,279.85, 192,206.18 and 75,617.65 is: 104,352.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,279.85 : 192,206.18 = 75,617.65 : x
  2. Step 2: Convert to fraction form
    139,279.85/192,206.18 = 75,617.65/x
  3. Step 3: Cross multiply
    139,279.85x = 192,206.18 × 75,617.65
  4. Step 4: Simplify right side
    139,279.85x = 14,534,179,355.61
  5. Step 5: Solve for x
    x = 14,534,179,355.61/139,279.85
  6. Step 6: Final answer
    x = 104,352.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.