Home / 139,275.98-192,205.26-78,845.53

Finding the Fourth Proportional to 139,275.98, 192,205.26 and 78,845.53

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Solution

The fourth proportional to 139,275.98, 192,205.26 and 78,845.53 is: 108,809.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,275.98 : 192,205.26 = 78,845.53 : x
  2. Step 2: Convert to fraction form
    139,275.98/192,205.26 = 78,845.53/x
  3. Step 3: Cross multiply
    139,275.98x = 192,205.26 × 78,845.53
  4. Step 4: Simplify right side
    139,275.98x = 15,154,524,632.46
  5. Step 5: Solve for x
    x = 15,154,524,632.46/139,275.98
  6. Step 6: Final answer
    x = 108,809.32

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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.