Home / 139,746.97-192,847.79-81,613.70

Finding the Fourth Proportional to 139,746.97, 192,847.79 and 81,613.70

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Solution

The fourth proportional to 139,746.97, 192,847.79 and 81,613.70 is: 112,625.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,746.97 : 192,847.79 = 81,613.70 : x
  2. Step 2: Convert to fraction form
    139,746.97/192,847.79 = 81,613.70/x
  3. Step 3: Cross multiply
    139,746.97x = 192,847.79 × 81,613.70
  4. Step 4: Simplify right side
    139,746.97x = 15,739,021,752.77
  5. Step 5: Solve for x
    x = 15,739,021,752.77/139,746.97
  6. Step 6: Final answer
    x = 112,625.14

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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.