Home / 102,982.40-154,214.40-67,731.20

Finding the Fourth Proportional to 102,982.40, 154,214.40 and 67,731.20

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Solution

The fourth proportional to 102,982.40, 154,214.40 and 67,731.20 is: 101,426.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,982.40 : 154,214.40 = 67,731.20 : x
  2. Step 2: Convert to fraction form
    102,982.40/154,214.40 = 67,731.20/x
  3. Step 3: Cross multiply
    102,982.40x = 154,214.40 × 67,731.20
  4. Step 4: Simplify right side
    102,982.40x = 10,445,126,369.28
  5. Step 5: Solve for x
    x = 10,445,126,369.28/102,982.40
  6. Step 6: Final answer
    x = 101,426.32

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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.