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Finding the Fourth Proportional to 136,753.56, 188,655.21 and 88,989.48

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Solution

The fourth proportional to 136,753.56, 188,655.21 and 88,989.48 is: 122,763.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,753.56 : 188,655.21 = 88,989.48 : x
  2. Step 2: Convert to fraction form
    136,753.56/188,655.21 = 88,989.48/x
  3. Step 3: Cross multiply
    136,753.56x = 188,655.21 × 88,989.48
  4. Step 4: Simplify right side
    136,753.56x = 16,788,329,037.19
  5. Step 5: Solve for x
    x = 16,788,329,037.19/136,753.56
  6. Step 6: Final answer
    x = 122,763.38

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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.