Home / 156,781.73-216,358.62-85,161.25

Finding the Fourth Proportional to 156,781.73, 216,358.62 and 85,161.25

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Solution

The fourth proportional to 156,781.73, 216,358.62 and 85,161.25 is: 117,522.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.73 : 216,358.62 = 85,161.25 : x
  2. Step 2: Convert to fraction form
    156,781.73/216,358.62 = 85,161.25/x
  3. Step 3: Cross multiply
    156,781.73x = 216,358.62 × 85,161.25
  4. Step 4: Simplify right side
    156,781.73x = 18,425,370,109.58
  5. Step 5: Solve for x
    x = 18,425,370,109.58/156,781.73
  6. Step 6: Final answer
    x = 117,522.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.