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Finding the Fourth Proportional to 189,479.70, 261,482.34 and 104,596.86

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Solution

The fourth proportional to 189,479.70, 261,482.34 and 104,596.86 is: 144,343.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,479.70 : 261,482.34 = 104,596.86 : x
  2. Step 2: Convert to fraction form
    189,479.70/261,482.34 = 104,596.86/x
  3. Step 3: Cross multiply
    189,479.70x = 261,482.34 × 104,596.86
  4. Step 4: Simplify right side
    189,479.70x = 27,350,231,709.45
  5. Step 5: Solve for x
    x = 27,350,231,709.45/189,479.70
  6. Step 6: Final answer
    x = 144,343.86

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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.