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Finding the Fourth Proportional to 124,765.84, 172,194.42 and 79,429.33

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Solution

The fourth proportional to 124,765.84, 172,194.42 and 79,429.33 is: 109,623.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,765.84 : 172,194.42 = 79,429.33 : x
  2. Step 2: Convert to fraction form
    124,765.84/172,194.42 = 79,429.33/x
  3. Step 3: Cross multiply
    124,765.84x = 172,194.42 × 79,429.33
  4. Step 4: Simplify right side
    124,765.84x = 13,677,287,410.34
  5. Step 5: Solve for x
    x = 13,677,287,410.34/124,765.84
  6. Step 6: Final answer
    x = 109,623.66

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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.