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Finding the Fourth Proportional to 164,937.60, 247,348.80 and 86,025.60

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Solution

The fourth proportional to 164,937.60, 247,348.80 and 86,025.60 is: 129,008.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,937.60 : 247,348.80 = 86,025.60 : x
  2. Step 2: Convert to fraction form
    164,937.60/247,348.80 = 86,025.60/x
  3. Step 3: Cross multiply
    164,937.60x = 247,348.80 × 86,025.60
  4. Step 4: Simplify right side
    164,937.60x = 21,278,328,929.28
  5. Step 5: Solve for x
    x = 21,278,328,929.28/164,937.60
  6. Step 6: Final answer
    x = 129,008.36

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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.