Home / 131,565.60-197,348.40-120,679.20

Finding the Fourth Proportional to 131,565.60, 197,348.40 and 120,679.20

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Solution

The fourth proportional to 131,565.60, 197,348.40 and 120,679.20 is: 181,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,565.60 : 197,348.40 = 120,679.20 : x
  2. Step 2: Convert to fraction form
    131,565.60/197,348.40 = 120,679.20/x
  3. Step 3: Cross multiply
    131,565.60x = 197,348.40 × 120,679.20
  4. Step 4: Simplify right side
    131,565.60x = 23,815,847,033.28
  5. Step 5: Solve for x
    x = 23,815,847,033.28/131,565.60
  6. Step 6: Final answer
    x = 181,018.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.