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Finding the Fourth Proportional to 124,398.84, 171,669.30 and 67,809

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Solution

The fourth proportional to 124,398.84, 171,669.30 and 67,809 is: 93,575.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,398.84 : 171,669.30 = 67,809 : x
  2. Step 2: Convert to fraction form
    124,398.84/171,669.30 = 67,809/x
  3. Step 3: Cross multiply
    124,398.84x = 171,669.30 × 67,809
  4. Step 4: Simplify right side
    124,398.84x = 11,640,723,563.70
  5. Step 5: Solve for x
    x = 11,640,723,563.70/124,398.84
  6. Step 6: Final answer
    x = 93,575.82

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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.