Home / 139,627.68-192,643.56-79,195.20

Finding the Fourth Proportional to 139,627.68, 192,643.56 and 79,195.20

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Solution

The fourth proportional to 139,627.68, 192,643.56 and 79,195.20 is: 109,265.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,627.68 : 192,643.56 = 79,195.20 : x
  2. Step 2: Convert to fraction form
    139,627.68/192,643.56 = 79,195.20/x
  3. Step 3: Cross multiply
    139,627.68x = 192,643.56 × 79,195.20
  4. Step 4: Simplify right side
    139,627.68x = 15,256,445,262.91
  5. Step 5: Solve for x
    x = 15,256,445,262.91/139,627.68
  6. Step 6: Final answer
    x = 109,265.19

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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.