Home / 156,787.60-216,367.73-85,168.21

Finding the Fourth Proportional to 156,787.60, 216,367.73 and 85,168.21

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Solution

The fourth proportional to 156,787.60, 216,367.73 and 85,168.21 is: 117,532.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,787.60 : 216,367.73 = 85,168.21 : x
  2. Step 2: Convert to fraction form
    156,787.60/216,367.73 = 85,168.21/x
  3. Step 3: Cross multiply
    156,787.60x = 216,367.73 × 85,168.21
  4. Step 4: Simplify right side
    156,787.60x = 18,427,652,265.86
  5. Step 5: Solve for x
    x = 18,427,652,265.86/156,787.60
  6. Step 6: Final answer
    x = 117,532.59

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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.