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Finding the Fourth Proportional to 129,866.42, 179,205.81 and 73,283.06

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Solution

The fourth proportional to 129,866.42, 179,205.81 and 73,283.06 is: 101,125.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,866.42 : 179,205.81 = 73,283.06 : x
  2. Step 2: Convert to fraction form
    129,866.42/179,205.81 = 73,283.06/x
  3. Step 3: Cross multiply
    129,866.42x = 179,205.81 × 73,283.06
  4. Step 4: Simplify right side
    129,866.42x = 13,132,750,126.58
  5. Step 5: Solve for x
    x = 13,132,750,126.58/129,866.42
  6. Step 6: Final answer
    x = 101,125.06

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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.