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Finding the Fourth Proportional to 169,165.60, 253,748.40 and 84,893.20

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Solution

The fourth proportional to 169,165.60, 253,748.40 and 84,893.20 is: 127,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,165.60 : 253,748.40 = 84,893.20 : x
  2. Step 2: Convert to fraction form
    169,165.60/253,748.40 = 84,893.20/x
  3. Step 3: Cross multiply
    169,165.60x = 253,748.40 × 84,893.20
  4. Step 4: Simplify right side
    169,165.60x = 21,541,513,670.88
  5. Step 5: Solve for x
    x = 21,541,513,670.88/169,165.60
  6. Step 6: Final answer
    x = 127,339.80

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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.