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Finding the Fourth Proportional to 126,989.82, 175,236.81 and 69,619.98

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Solution

The fourth proportional to 126,989.82, 175,236.81 and 69,619.98 is: 96,070.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,989.82 : 175,236.81 = 69,619.98 : x
  2. Step 2: Convert to fraction form
    126,989.82/175,236.81 = 69,619.98/x
  3. Step 3: Cross multiply
    126,989.82x = 175,236.81 × 69,619.98
  4. Step 4: Simplify right side
    126,989.82x = 12,199,983,207.46
  5. Step 5: Solve for x
    x = 12,199,983,207.46/126,989.82
  6. Step 6: Final answer
    x = 96,070.56

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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.