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Finding the Fourth Proportional to 169,636.20, 254,454.30 and 138,916.20

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Solution

The fourth proportional to 169,636.20, 254,454.30 and 138,916.20 is: 208,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,636.20 : 254,454.30 = 138,916.20 : x
  2. Step 2: Convert to fraction form
    169,636.20/254,454.30 = 138,916.20/x
  3. Step 3: Cross multiply
    169,636.20x = 254,454.30 × 138,916.20
  4. Step 4: Simplify right side
    169,636.20x = 35,347,824,429.66
  5. Step 5: Solve for x
    x = 35,347,824,429.66/169,636.20
  6. Step 6: Final answer
    x = 208,374.30

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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.