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Finding the Fourth Proportional to 189,357.95, 261,305.19 and 108,728.73

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Solution

The fourth proportional to 189,357.95, 261,305.19 and 108,728.73 is: 150,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,357.95 : 261,305.19 = 108,728.73 : x
  2. Step 2: Convert to fraction form
    189,357.95/261,305.19 = 108,728.73/x
  3. Step 3: Cross multiply
    189,357.95x = 261,305.19 × 108,728.73
  4. Step 4: Simplify right side
    189,357.95x = 28,411,381,451.11
  5. Step 5: Solve for x
    x = 28,411,381,451.11/189,357.95
  6. Step 6: Final answer
    x = 150,040.60

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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.