Home / 108,278.20-162,417.30-103,612.60

Finding the Fourth Proportional to 108,278.20, 162,417.30 and 103,612.60

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Solution

The fourth proportional to 108,278.20, 162,417.30 and 103,612.60 is: 155,418.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,278.20 : 162,417.30 = 103,612.60 : x
  2. Step 2: Convert to fraction form
    108,278.20/162,417.30 = 103,612.60/x
  3. Step 3: Cross multiply
    108,278.20x = 162,417.30 × 103,612.60
  4. Step 4: Simplify right side
    108,278.20x = 16,828,478,737.98
  5. Step 5: Solve for x
    x = 16,828,478,737.98/108,278.20
  6. Step 6: Final answer
    x = 155,418.90

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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.