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Finding the Fourth Proportional to 164,938.60, 247,350.30 and 86,026.60

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Solution

The fourth proportional to 164,938.60, 247,350.30 and 86,026.60 is: 129,009.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,938.60 : 247,350.30 = 86,026.60 : x
  2. Step 2: Convert to fraction form
    164,938.60/247,350.30 = 86,026.60/x
  3. Step 3: Cross multiply
    164,938.60x = 247,350.30 × 86,026.60
  4. Step 4: Simplify right side
    164,938.60x = 21,278,705,317.98
  5. Step 5: Solve for x
    x = 21,278,705,317.98/164,938.60
  6. Step 6: Final answer
    x = 129,009.86

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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.