Home / 129,764.64-179,069.76-73,181.28

Finding the Fourth Proportional to 129,764.64, 179,069.76 and 73,181.28

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Solution

The fourth proportional to 129,764.64, 179,069.76 and 73,181.28 is: 100,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,764.64 : 179,069.76 = 73,181.28 : x
  2. Step 2: Convert to fraction form
    129,764.64/179,069.76 = 73,181.28/x
  3. Step 3: Cross multiply
    129,764.64x = 179,069.76 × 73,181.28
  4. Step 4: Simplify right side
    129,764.64x = 13,104,554,246.09
  5. Step 5: Solve for x
    x = 13,104,554,246.09/129,764.64
  6. Step 6: Final answer
    x = 100,987.10

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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.