Home / 134,147.40-201,221.10-81,003.30

Finding the Fourth Proportional to 134,147.40, 201,221.10 and 81,003.30

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Solution

The fourth proportional to 134,147.40, 201,221.10 and 81,003.30 is: 121,504.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,147.40 : 201,221.10 = 81,003.30 : x
  2. Step 2: Convert to fraction form
    134,147.40/201,221.10 = 81,003.30/x
  3. Step 3: Cross multiply
    134,147.40x = 201,221.10 × 81,003.30
  4. Step 4: Simplify right side
    134,147.40x = 16,299,573,129.63
  5. Step 5: Solve for x
    x = 16,299,573,129.63/134,147.40
  6. Step 6: Final answer
    x = 121,504.95

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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.