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Finding the Fourth Proportional to 169,486.20, 254,221.20 and 57,155.40

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Solution

The fourth proportional to 169,486.20, 254,221.20 and 57,155.40 is: 85,730.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,486.20 : 254,221.20 = 57,155.40 : x
  2. Step 2: Convert to fraction form
    169,486.20/254,221.20 = 57,155.40/x
  3. Step 3: Cross multiply
    169,486.20x = 254,221.20 × 57,155.40
  4. Step 4: Simplify right side
    169,486.20x = 14,530,114,374.48
  5. Step 5: Solve for x
    x = 14,530,114,374.48/169,486.20
  6. Step 6: Final answer
    x = 85,730.37

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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.