Home / 139,340.75-192,287.06-75,677.18

Finding the Fourth Proportional to 139,340.75, 192,287.06 and 75,677.18

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Solution

The fourth proportional to 139,340.75, 192,287.06 and 75,677.18 is: 104,432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,340.75 : 192,287.06 = 75,677.18 : x
  2. Step 2: Convert to fraction form
    139,340.75/192,287.06 = 75,677.18/x
  3. Step 3: Cross multiply
    139,340.75x = 192,287.06 × 75,677.18
  4. Step 4: Simplify right side
    139,340.75x = 14,551,741,111.47
  5. Step 5: Solve for x
    x = 14,551,741,111.47/139,340.75
  6. Step 6: Final answer
    x = 104,432.78

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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.