Home / 134,122.60-200,892.30-81,440.20

Finding the Fourth Proportional to 134,122.60, 200,892.30 and 81,440.20

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Solution

The fourth proportional to 134,122.60, 200,892.30 and 81,440.20 is: 121,983.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,122.60 : 200,892.30 = 81,440.20 : x
  2. Step 2: Convert to fraction form
    134,122.60/200,892.30 = 81,440.20/x
  3. Step 3: Cross multiply
    134,122.60x = 200,892.30 × 81,440.20
  4. Step 4: Simplify right side
    134,122.60x = 16,360,709,090.46
  5. Step 5: Solve for x
    x = 16,360,709,090.46/134,122.60
  6. Step 6: Final answer
    x = 121,983.24

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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.