Home / 131,781.60-197,623.80-56,905.20

Finding the Fourth Proportional to 131,781.60, 197,623.80 and 56,905.20

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Solution

The fourth proportional to 131,781.60, 197,623.80 and 56,905.20 is: 85,336.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,781.60 : 197,623.80 = 56,905.20 : x
  2. Step 2: Convert to fraction form
    131,781.60/197,623.80 = 56,905.20/x
  3. Step 3: Cross multiply
    131,781.60x = 197,623.80 × 56,905.20
  4. Step 4: Simplify right side
    131,781.60x = 11,245,821,863.76
  5. Step 5: Solve for x
    x = 11,245,821,863.76/131,781.60
  6. Step 6: Final answer
    x = 85,336.81

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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.