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Finding the Fourth Proportional to 202,877.72, 279,876.92 and 131,280.88

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Solution

The fourth proportional to 202,877.72, 279,876.92 and 131,280.88 is: 181,106.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,877.72 : 279,876.92 = 131,280.88 : x
  2. Step 2: Convert to fraction form
    202,877.72/279,876.92 = 131,280.88/x
  3. Step 3: Cross multiply
    202,877.72x = 279,876.92 × 131,280.88
  4. Step 4: Simplify right side
    202,877.72x = 36,742,488,349.29
  5. Step 5: Solve for x
    x = 36,742,488,349.29/202,877.72
  6. Step 6: Final answer
    x = 181,106.57

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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.