Home / 131,720.40-197,004.60-117,781.20

Finding the Fourth Proportional to 131,720.40, 197,004.60 and 117,781.20

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Solution

The fourth proportional to 131,720.40, 197,004.60 and 117,781.20 is: 176,156.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,720.40 : 197,004.60 = 117,781.20 : x
  2. Step 2: Convert to fraction form
    131,720.40/197,004.60 = 117,781.20/x
  3. Step 3: Cross multiply
    131,720.40x = 197,004.60 × 117,781.20
  4. Step 4: Simplify right side
    131,720.40x = 23,203,438,193.52
  5. Step 5: Solve for x
    x = 23,203,438,193.52/131,720.40
  6. Step 6: Final answer
    x = 176,156.75

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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.