Home / 139,592.25-192,637.40-79,143.57

Finding the Fourth Proportional to 139,592.25, 192,637.40 and 79,143.57

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Solution

The fourth proportional to 139,592.25, 192,637.40 and 79,143.57 is: 109,218.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,592.25 : 192,637.40 = 79,143.57 : x
  2. Step 2: Convert to fraction form
    139,592.25/192,637.40 = 79,143.57/x
  3. Step 3: Cross multiply
    139,592.25x = 192,637.40 × 79,143.57
  4. Step 4: Simplify right side
    139,592.25x = 15,246,011,155.80
  5. Step 5: Solve for x
    x = 15,246,011,155.80/139,592.25
  6. Step 6: Final answer
    x = 109,218.18

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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.