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Finding the Fourth Proportional to 139,230.39, 192,132.80 and 75,566.82

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Solution

The fourth proportional to 139,230.39, 192,132.80 and 75,566.82 is: 104,279.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,230.39 : 192,132.80 = 75,566.82 : x
  2. Step 2: Convert to fraction form
    139,230.39/192,132.80 = 75,566.82/x
  3. Step 3: Cross multiply
    139,230.39x = 192,132.80 × 75,566.82
  4. Step 4: Simplify right side
    139,230.39x = 14,518,864,619.24
  5. Step 5: Solve for x
    x = 14,518,864,619.24/139,230.39
  6. Step 6: Final answer
    x = 104,279.42

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1.5x scale

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.