Home / 156,959.10-235,438.65-68,312.70

Finding the Fourth Proportional to 156,959.10, 235,438.65 and 68,312.70

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Solution

The fourth proportional to 156,959.10, 235,438.65 and 68,312.70 is: 102,469.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,959.10 : 235,438.65 = 68,312.70 : x
  2. Step 2: Convert to fraction form
    156,959.10/235,438.65 = 68,312.70/x
  3. Step 3: Cross multiply
    156,959.10x = 235,438.65 × 68,312.70
  4. Step 4: Simplify right side
    156,959.10x = 16,083,449,865.86
  5. Step 5: Solve for x
    x = 16,083,449,865.86/156,959.10
  6. Step 6: Final answer
    x = 102,469.05

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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.