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Finding the Fourth Proportional to 189,230.70, 261,126.54 and 108,601.50

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Solution

The fourth proportional to 189,230.70, 261,126.54 and 108,601.50 is: 149,863.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,230.70 : 261,126.54 = 108,601.50 : x
  2. Step 2: Convert to fraction form
    189,230.70/261,126.54 = 108,601.50/x
  3. Step 3: Cross multiply
    189,230.70x = 261,126.54 × 108,601.50
  4. Step 4: Simplify right side
    189,230.70x = 28,358,733,933.81
  5. Step 5: Solve for x
    x = 28,358,733,933.81/189,230.70
  6. Step 6: Final answer
    x = 149,863.28

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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.