Home / 141,720.31-195,571.69-78,064.03

Finding the Fourth Proportional to 141,720.31, 195,571.69 and 78,064.03

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Solution

The fourth proportional to 141,720.31, 195,571.69 and 78,064.03 is: 107,727.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,720.31 : 195,571.69 = 78,064.03 : x
  2. Step 2: Convert to fraction form
    141,720.31/195,571.69 = 78,064.03/x
  3. Step 3: Cross multiply
    141,720.31x = 195,571.69 × 78,064.03
  4. Step 4: Simplify right side
    141,720.31x = 15,267,114,275.31
  5. Step 5: Solve for x
    x = 15,267,114,275.31/141,720.31
  6. Step 6: Final answer
    x = 107,727.07

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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.