Home / 84,135.17-115,990.23-67,196.45

Finding the Fourth Proportional to 84,135.17, 115,990.23 and 67,196.45

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Solution

The fourth proportional to 84,135.17, 115,990.23 and 67,196.45 is: 92,638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,135.17 : 115,990.23 = 67,196.45 : x
  2. Step 2: Convert to fraction form
    84,135.17/115,990.23 = 67,196.45/x
  3. Step 3: Cross multiply
    84,135.17x = 115,990.23 × 67,196.45
  4. Step 4: Simplify right side
    84,135.17x = 7,794,131,110.73
  5. Step 5: Solve for x
    x = 7,794,131,110.73/84,135.17
  6. Step 6: Final answer
    x = 92,638.21

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1.5x scale

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.