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Finding the Fourth Proportional to 108,034.70, 161,760.45 and 84,706.70

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Solution

The fourth proportional to 108,034.70, 161,760.45 and 84,706.70 is: 126,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,034.70 : 161,760.45 = 84,706.70 : x
  2. Step 2: Convert to fraction form
    108,034.70/161,760.45 = 84,706.70/x
  3. Step 3: Cross multiply
    108,034.70x = 161,760.45 × 84,706.70
  4. Step 4: Simplify right side
    108,034.70x = 13,702,193,910.02
  5. Step 5: Solve for x
    x = 13,702,193,910.02/108,034.70
  6. Step 6: Final answer
    x = 126,831.42

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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.