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Finding the Fourth Proportional to 202,165.61, 279,078.19 and 130,580.54

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Solution

The fourth proportional to 202,165.61, 279,078.19 and 130,580.54 is: 180,259.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,165.61 : 279,078.19 = 130,580.54 : x
  2. Step 2: Convert to fraction form
    202,165.61/279,078.19 = 130,580.54/x
  3. Step 3: Cross multiply
    202,165.61x = 279,078.19 × 130,580.54
  4. Step 4: Simplify right side
    202,165.61x = 36,442,181,123.67
  5. Step 5: Solve for x
    x = 36,442,181,123.67/202,165.61
  6. Step 6: Final answer
    x = 180,259.05

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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.