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Finding the Fourth Proportional to 136,771.53, 188,776.20 and 80,201.13

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Solution

The fourth proportional to 136,771.53, 188,776.20 and 80,201.13 is: 110,696.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,771.53 : 188,776.20 = 80,201.13 : x
  2. Step 2: Convert to fraction form
    136,771.53/188,776.20 = 80,201.13/x
  3. Step 3: Cross multiply
    136,771.53x = 188,776.20 × 80,201.13
  4. Step 4: Simplify right side
    136,771.53x = 15,140,064,557.11
  5. Step 5: Solve for x
    x = 15,140,064,557.11/136,771.53
  6. Step 6: Final answer
    x = 110,696.02

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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.