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Finding the Fourth Proportional to 135,981.58, 187,648.50 and 75,556.48

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Solution

The fourth proportional to 135,981.58, 187,648.50 and 75,556.48 is: 104,264.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,981.58 : 187,648.50 = 75,556.48 : x
  2. Step 2: Convert to fraction form
    135,981.58/187,648.50 = 75,556.48/x
  3. Step 3: Cross multiply
    135,981.58x = 187,648.50 × 75,556.48
  4. Step 4: Simplify right side
    135,981.58x = 14,178,060,137.28
  5. Step 5: Solve for x
    x = 14,178,060,137.28/135,981.58
  6. Step 6: Final answer
    x = 104,264.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.