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Finding the Fourth Proportional to 129,752.64, 179,058.68 and 73,164.02

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Solution

The fourth proportional to 129,752.64, 179,058.68 and 73,164.02 is: 100,966.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,752.64 : 179,058.68 = 73,164.02 : x
  2. Step 2: Convert to fraction form
    129,752.64/179,058.68 = 73,164.02/x
  3. Step 3: Cross multiply
    129,752.64x = 179,058.68 × 73,164.02
  4. Step 4: Simplify right side
    129,752.64x = 13,100,651,583.58
  5. Step 5: Solve for x
    x = 13,100,651,583.58/129,752.64
  6. Step 6: Final answer
    x = 100,966.36

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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.