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Finding the Fourth Proportional to 189,028.88, 260,897.52 and 108,510.80

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Solution

The fourth proportional to 189,028.88, 260,897.52 and 108,510.80 is: 149,766.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,028.88 : 260,897.52 = 108,510.80 : x
  2. Step 2: Convert to fraction form
    189,028.88/260,897.52 = 108,510.80/x
  3. Step 3: Cross multiply
    189,028.88x = 260,897.52 × 108,510.80
  4. Step 4: Simplify right side
    189,028.88x = 28,310,198,613.22
  5. Step 5: Solve for x
    x = 28,310,198,613.22/189,028.88
  6. Step 6: Final answer
    x = 149,766.53

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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.