Home / 156,943.10-235,414.65-139,739.90

Finding the Fourth Proportional to 156,943.10, 235,414.65 and 139,739.90

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Solution

The fourth proportional to 156,943.10, 235,414.65 and 139,739.90 is: 209,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,943.10 : 235,414.65 = 139,739.90 : x
  2. Step 2: Convert to fraction form
    156,943.10/235,414.65 = 139,739.90/x
  3. Step 3: Cross multiply
    156,943.10x = 235,414.65 × 139,739.90
  4. Step 4: Simplify right side
    156,943.10x = 32,896,819,649.54
  5. Step 5: Solve for x
    x = 32,896,819,649.54/156,943.10
  6. Step 6: Final answer
    x = 209,609.85

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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.