Home / 109,623.20-164,499.60-72,291.20

Finding the Fourth Proportional to 109,623.20, 164,499.60 and 72,291.20

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Solution

The fourth proportional to 109,623.20, 164,499.60 and 72,291.20 is: 108,479.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,623.20 : 164,499.60 = 72,291.20 : x
  2. Step 2: Convert to fraction form
    109,623.20/164,499.60 = 72,291.20/x
  3. Step 3: Cross multiply
    109,623.20x = 164,499.60 × 72,291.20
  4. Step 4: Simplify right side
    109,623.20x = 11,891,873,483.52
  5. Step 5: Solve for x
    x = 11,891,873,483.52/109,623.20
  6. Step 6: Final answer
    x = 108,479.53

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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.