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Finding the Fourth Proportional to 129,599.88, 178,857.01 and 73,011.25

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Solution

The fourth proportional to 129,599.88, 178,857.01 and 73,011.25 is: 100,760.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,599.88 : 178,857.01 = 73,011.25 : x
  2. Step 2: Convert to fraction form
    129,599.88/178,857.01 = 73,011.25/x
  3. Step 3: Cross multiply
    129,599.88x = 178,857.01 × 73,011.25
  4. Step 4: Simplify right side
    129,599.88x = 13,058,573,871.36
  5. Step 5: Solve for x
    x = 13,058,573,871.36/129,599.88
  6. Step 6: Final answer
    x = 100,760.69

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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.