Home / 133,123.19-199,743.12-69,928.65

Finding the Fourth Proportional to 133,123.19, 199,743.12 and 69,928.65

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Solution

The fourth proportional to 133,123.19, 199,743.12 and 69,928.65 is: 104,923.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,123.19 : 199,743.12 = 69,928.65 : x
  2. Step 2: Convert to fraction form
    133,123.19/199,743.12 = 69,928.65/x
  3. Step 3: Cross multiply
    133,123.19x = 199,743.12 × 69,928.65
  4. Step 4: Simplify right side
    133,123.19x = 13,967,766,728.39
  5. Step 5: Solve for x
    x = 13,967,766,728.39/133,123.19
  6. Step 6: Final answer
    x = 104,923.62

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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.