Home / 142,002.88-195,962.88-78,343.36

Finding the Fourth Proportional to 142,002.88, 195,962.88 and 78,343.36

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Solution

The fourth proportional to 142,002.88, 195,962.88 and 78,343.36 is: 108,113.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,002.88 : 195,962.88 = 78,343.36 : x
  2. Step 2: Convert to fraction form
    142,002.88/195,962.88 = 78,343.36/x
  3. Step 3: Cross multiply
    142,002.88x = 195,962.88 × 78,343.36
  4. Step 4: Simplify right side
    142,002.88x = 15,352,390,454.48
  5. Step 5: Solve for x
    x = 15,352,390,454.48/142,002.88
  6. Step 6: Final answer
    x = 108,113.23

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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.