Home / 109,495.20-164,307.60-72,163.20

Finding the Fourth Proportional to 109,495.20, 164,307.60 and 72,163.20

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Solution

The fourth proportional to 109,495.20, 164,307.60 and 72,163.20 is: 108,287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,495.20 : 164,307.60 = 72,163.20 : x
  2. Step 2: Convert to fraction form
    109,495.20/164,307.60 = 72,163.20/x
  3. Step 3: Cross multiply
    109,495.20x = 164,307.60 × 72,163.20
  4. Step 4: Simplify right side
    109,495.20x = 11,856,962,200.32
  5. Step 5: Solve for x
    x = 11,856,962,200.32/109,495.20
  6. Step 6: Final answer
    x = 108,287.51

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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.