Home / 109,677.20-164,515.80-68,205.20

Finding the Fourth Proportional to 109,677.20, 164,515.80 and 68,205.20

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Solution

The fourth proportional to 109,677.20, 164,515.80 and 68,205.20 is: 102,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,677.20 : 164,515.80 = 68,205.20 : x
  2. Step 2: Convert to fraction form
    109,677.20/164,515.80 = 68,205.20/x
  3. Step 3: Cross multiply
    109,677.20x = 164,515.80 × 68,205.20
  4. Step 4: Simplify right side
    109,677.20x = 11,220,833,042.16
  5. Step 5: Solve for x
    x = 11,220,833,042.16/109,677.20
  6. Step 6: Final answer
    x = 102,307.80

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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.