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Finding the Fourth Proportional to 202,578.72, 279,559.44 and 113,154.72

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Solution

The fourth proportional to 202,578.72, 279,559.44 and 113,154.72 is: 156,153.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,578.72 : 279,559.44 = 113,154.72 : x
  2. Step 2: Convert to fraction form
    202,578.72/279,559.44 = 113,154.72/x
  3. Step 3: Cross multiply
    202,578.72x = 279,559.44 × 113,154.72
  4. Step 4: Simplify right side
    202,578.72x = 31,633,470,156.56
  5. Step 5: Solve for x
    x = 31,633,470,156.56/202,578.72
  6. Step 6: Final answer
    x = 156,153.96

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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.