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Finding the Fourth Proportional to 102,122.80, 152,881.80 and 75,943.60

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Solution

The fourth proportional to 102,122.80, 152,881.80 and 75,943.60 is: 113,690.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,122.80 : 152,881.80 = 75,943.60 : x
  2. Step 2: Convert to fraction form
    102,122.80/152,881.80 = 75,943.60/x
  3. Step 3: Cross multiply
    102,122.80x = 152,881.80 × 75,943.60
  4. Step 4: Simplify right side
    102,122.80x = 11,610,394,266.48
  5. Step 5: Solve for x
    x = 11,610,394,266.48/102,122.80
  6. Step 6: Final answer
    x = 113,690.52

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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.