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Finding the Fourth Proportional to 164,577.60, 246,808.80 and 85,665.60

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Solution

The fourth proportional to 164,577.60, 246,808.80 and 85,665.60 is: 128,468.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,577.60 : 246,808.80 = 85,665.60 : x
  2. Step 2: Convert to fraction form
    164,577.60/246,808.80 = 85,665.60/x
  3. Step 3: Cross multiply
    164,577.60x = 246,808.80 × 85,665.60
  4. Step 4: Simplify right side
    164,577.60x = 21,143,023,937.28
  5. Step 5: Solve for x
    x = 21,143,023,937.28/164,577.60
  6. Step 6: Final answer
    x = 128,468.42

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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.