Home / 156,780.54-216,361.17-85,164.66

Finding the Fourth Proportional to 156,780.54, 216,361.17 and 85,164.66

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Solution

The fourth proportional to 156,780.54, 216,361.17 and 85,164.66 is: 117,529.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,780.54 : 216,361.17 = 85,164.66 : x
  2. Step 2: Convert to fraction form
    156,780.54/216,361.17 = 85,164.66/x
  3. Step 3: Cross multiply
    156,780.54x = 216,361.17 × 85,164.66
  4. Step 4: Simplify right side
    156,780.54x = 18,426,325,480.25
  5. Step 5: Solve for x
    x = 18,426,325,480.25/156,780.54
  6. Step 6: Final answer
    x = 117,529.42

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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.