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Finding the Fourth Proportional to 189,192.96, 261,074.88 and 108,602.88

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Solution

The fourth proportional to 189,192.96, 261,074.88 and 108,602.88 is: 149,865.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,192.96 : 261,074.88 = 108,602.88 : x
  2. Step 2: Convert to fraction form
    189,192.96/261,074.88 = 108,602.88/x
  3. Step 3: Cross multiply
    189,192.96x = 261,074.88 × 108,602.88
  4. Step 4: Simplify right side
    189,192.96x = 28,353,483,863.65
  5. Step 5: Solve for x
    x = 28,353,483,863.65/189,192.96
  6. Step 6: Final answer
    x = 149,865.43

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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.