Home / 142,002.24-195,963.06-78,340.03

Finding the Fourth Proportional to 142,002.24, 195,963.06 and 78,340.03

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Solution

The fourth proportional to 142,002.24, 195,963.06 and 78,340.03 is: 108,109.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,002.24 : 195,963.06 = 78,340.03 : x
  2. Step 2: Convert to fraction form
    142,002.24/195,963.06 = 78,340.03/x
  3. Step 3: Cross multiply
    142,002.24x = 195,963.06 × 78,340.03
  4. Step 4: Simplify right side
    142,002.24x = 15,351,751,999.29
  5. Step 5: Solve for x
    x = 15,351,751,999.29/142,002.24
  6. Step 6: Final answer
    x = 108,109.22

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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.