Home / 156,973.82-216,622.70-85,353.90

Finding the Fourth Proportional to 156,973.82, 216,622.70 and 85,353.90

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Solution

The fourth proportional to 156,973.82, 216,622.70 and 85,353.90 is: 117,787.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,973.82 : 216,622.70 = 85,353.90 : x
  2. Step 2: Convert to fraction form
    156,973.82/216,622.70 = 85,353.90/x
  3. Step 3: Cross multiply
    156,973.82x = 216,622.70 × 85,353.90
  4. Step 4: Simplify right side
    156,973.82x = 18,489,592,273.53
  5. Step 5: Solve for x
    x = 18,489,592,273.53/156,973.82
  6. Step 6: Final answer
    x = 117,787.74

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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.