Home / 131,060.40-196,331.40-121,729.20

Finding the Fourth Proportional to 131,060.40, 196,331.40 and 121,729.20

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Solution

The fourth proportional to 131,060.40, 196,331.40 and 121,729.20 is: 182,353.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,060.40 : 196,331.40 = 121,729.20 : x
  2. Step 2: Convert to fraction form
    131,060.40/196,331.40 = 121,729.20/x
  3. Step 3: Cross multiply
    131,060.40x = 196,331.40 × 121,729.20
  4. Step 4: Simplify right side
    131,060.40x = 23,899,264,256.88
  5. Step 5: Solve for x
    x = 23,899,264,256.88/131,060.40
  6. Step 6: Final answer
    x = 182,353.05

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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.