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Finding the Fourth Proportional to 202,323.74, 279,206.78 and 111,679.72

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Solution

The fourth proportional to 202,323.74, 279,206.78 and 111,679.72 is: 154,118.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,323.74 : 279,206.78 = 111,679.72 : x
  2. Step 2: Convert to fraction form
    202,323.74/279,206.78 = 111,679.72/x
  3. Step 3: Cross multiply
    202,323.74x = 279,206.78 × 111,679.72
  4. Step 4: Simplify right side
    202,323.74x = 31,181,735,012.50
  5. Step 5: Solve for x
    x = 31,181,735,012.50/202,323.74
  6. Step 6: Final answer
    x = 154,118.02

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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.