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Finding the Fourth Proportional to 102,556.60, 153,834.90 and 88,559.80

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Solution

The fourth proportional to 102,556.60, 153,834.90 and 88,559.80 is: 132,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,556.60 : 153,834.90 = 88,559.80 : x
  2. Step 2: Convert to fraction form
    102,556.60/153,834.90 = 88,559.80/x
  3. Step 3: Cross multiply
    102,556.60x = 153,834.90 × 88,559.80
  4. Step 4: Simplify right side
    102,556.60x = 13,623,587,977.02
  5. Step 5: Solve for x
    x = 13,623,587,977.02/102,556.60
  6. Step 6: Final answer
    x = 132,839.70

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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.