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Finding the Fourth Proportional to 126,329.84, 174,334.12 and 69,740

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Solution

The fourth proportional to 126,329.84, 174,334.12 and 69,740 is: 96,240.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,329.84 : 174,334.12 = 69,740 : x
  2. Step 2: Convert to fraction form
    126,329.84/174,334.12 = 69,740/x
  3. Step 3: Cross multiply
    126,329.84x = 174,334.12 × 69,740
  4. Step 4: Simplify right side
    126,329.84x = 12,158,061,528.80
  5. Step 5: Solve for x
    x = 12,158,061,528.80/126,329.84
  6. Step 6: Final answer
    x = 96,240.62

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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.