Home / 139,515.74-192,538.29-79,087.55

Finding the Fourth Proportional to 139,515.74, 192,538.29 and 79,087.55

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Solution

The fourth proportional to 139,515.74, 192,538.29 and 79,087.55 is: 109,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,515.74 : 192,538.29 = 79,087.55 : x
  2. Step 2: Convert to fraction form
    139,515.74/192,538.29 = 79,087.55/x
  3. Step 3: Cross multiply
    139,515.74x = 192,538.29 × 79,087.55
  4. Step 4: Simplify right side
    139,515.74x = 15,227,381,637.29
  5. Step 5: Solve for x
    x = 15,227,381,637.29/139,515.74
  6. Step 6: Final answer
    x = 109,144.55

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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.