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Finding the Fourth Proportional to 108,728.80, 162,898.80 and 92,010.40

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Solution

The fourth proportional to 108,728.80, 162,898.80 and 92,010.40 is: 137,851.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,728.80 : 162,898.80 = 92,010.40 : x
  2. Step 2: Convert to fraction form
    108,728.80/162,898.80 = 92,010.40/x
  3. Step 3: Cross multiply
    108,728.80x = 162,898.80 × 92,010.40
  4. Step 4: Simplify right side
    108,728.80x = 14,988,383,747.52
  5. Step 5: Solve for x
    x = 14,988,383,747.52/108,728.80
  6. Step 6: Final answer
    x = 137,851.09

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1.5x scale

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.