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Finding the Fourth Proportional to 129,782.34, 179,110.17 and 73,205.46

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Solution

The fourth proportional to 129,782.34, 179,110.17 and 73,205.46 is: 101,029.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,782.34 : 179,110.17 = 73,205.46 : x
  2. Step 2: Convert to fraction form
    129,782.34/179,110.17 = 73,205.46/x
  3. Step 3: Cross multiply
    129,782.34x = 179,110.17 × 73,205.46
  4. Step 4: Simplify right side
    129,782.34x = 13,111,842,385.53
  5. Step 5: Solve for x
    x = 13,111,842,385.53/129,782.34
  6. Step 6: Final answer
    x = 101,029.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.