Home / 156,221.76-234,452.94-81,360.75

Finding the Fourth Proportional to 156,221.76, 234,452.94 and 81,360.75

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Solution

The fourth proportional to 156,221.76, 234,452.94 and 81,360.75 is: 122,103.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,221.76 : 234,452.94 = 81,360.75 : x
  2. Step 2: Convert to fraction form
    156,221.76/234,452.94 = 81,360.75/x
  3. Step 3: Cross multiply
    156,221.76x = 234,452.94 × 81,360.75
  4. Step 4: Simplify right side
    156,221.76x = 19,075,267,038.11
  5. Step 5: Solve for x
    x = 19,075,267,038.11/156,221.76
  6. Step 6: Final answer
    x = 122,103.78

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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.