Home / 112,404.22-155,113.20-61,418.70

Finding the Fourth Proportional to 112,404.22, 155,113.20 and 61,418.70

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Solution

The fourth proportional to 112,404.22, 155,113.20 and 61,418.70 is: 84,755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,404.22 : 155,113.20 = 61,418.70 : x
  2. Step 2: Convert to fraction form
    112,404.22/155,113.20 = 61,418.70/x
  3. Step 3: Cross multiply
    112,404.22x = 155,113.20 × 61,418.70
  4. Step 4: Simplify right side
    112,404.22x = 9,526,851,096.84
  5. Step 5: Solve for x
    x = 9,526,851,096.84/112,404.22
  6. Step 6: Final answer
    x = 84,755.28

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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.