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Finding the Fourth Proportional to 119,191.10, 178,942.91 and 79,923.92

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Solution

The fourth proportional to 119,191.10, 178,942.91 and 79,923.92 is: 119,990.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,191.10 : 178,942.91 = 79,923.92 : x
  2. Step 2: Convert to fraction form
    119,191.10/178,942.91 = 79,923.92/x
  3. Step 3: Cross multiply
    119,191.10x = 178,942.91 × 79,923.92
  4. Step 4: Simplify right side
    119,191.10x = 14,301,817,529.07
  5. Step 5: Solve for x
    x = 14,301,817,529.07/119,191.10
  6. Step 6: Final answer
    x = 119,990.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.