Home / 142,540.48-196,702.92-78,878.24

Finding the Fourth Proportional to 142,540.48, 196,702.92 and 78,878.24

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Solution

The fourth proportional to 142,540.48, 196,702.92 and 78,878.24 is: 108,850.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,540.48 : 196,702.92 = 78,878.24 : x
  2. Step 2: Convert to fraction form
    142,540.48/196,702.92 = 78,878.24/x
  3. Step 3: Cross multiply
    142,540.48x = 196,702.92 × 78,878.24
  4. Step 4: Simplify right side
    142,540.48x = 15,515,580,132.46
  5. Step 5: Solve for x
    x = 15,515,580,132.46/142,540.48
  6. Step 6: Final answer
    x = 108,850.34

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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.