Home / 141,559.94-195,360.78-81,140.63

Finding the Fourth Proportional to 141,559.94, 195,360.78 and 81,140.63

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Solution

The fourth proportional to 141,559.94, 195,360.78 and 81,140.63 is: 111,978.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,559.94 : 195,360.78 = 81,140.63 : x
  2. Step 2: Convert to fraction form
    141,559.94/195,360.78 = 81,140.63/x
  3. Step 3: Cross multiply
    141,559.94x = 195,360.78 × 81,140.63
  4. Step 4: Simplify right side
    141,559.94x = 15,851,696,766.49
  5. Step 5: Solve for x
    x = 15,851,696,766.49/141,559.94
  6. Step 6: Final answer
    x = 111,978.69

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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.