Home / 108,721.20-162,880.20-61,834.80

Finding the Fourth Proportional to 108,721.20, 162,880.20 and 61,834.80

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Solution

The fourth proportional to 108,721.20, 162,880.20 and 61,834.80 is: 92,637.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,721.20 : 162,880.20 = 61,834.80 : x
  2. Step 2: Convert to fraction form
    108,721.20/162,880.20 = 61,834.80/x
  3. Step 3: Cross multiply
    108,721.20x = 162,880.20 × 61,834.80
  4. Step 4: Simplify right side
    108,721.20x = 10,071,664,590.96
  5. Step 5: Solve for x
    x = 10,071,664,590.96/108,721.20
  6. Step 6: Final answer
    x = 92,637.54

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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.