Home / 109,941.20-164,911.80-99,771.65

Finding the Fourth Proportional to 109,941.20, 164,911.80 and 99,771.65

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Solution

The fourth proportional to 109,941.20, 164,911.80 and 99,771.65 is: 149,657.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,941.20 : 164,911.80 = 99,771.65 : x
  2. Step 2: Convert to fraction form
    109,941.20/164,911.80 = 99,771.65/x
  3. Step 3: Cross multiply
    109,941.20x = 164,911.80 × 99,771.65
  4. Step 4: Simplify right side
    109,941.20x = 16,453,522,390.47
  5. Step 5: Solve for x
    x = 16,453,522,390.47/109,941.20
  6. Step 6: Final answer
    x = 149,657.48

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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.