Home / 129,760.10-179,068.65-73,171.08

Finding the Fourth Proportional to 129,760.10, 179,068.65 and 73,171.08

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Solution

The fourth proportional to 129,760.10, 179,068.65 and 73,171.08 is: 100,975.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,760.10 : 179,068.65 = 73,171.08 : x
  2. Step 2: Convert to fraction form
    129,760.10/179,068.65 = 73,171.08/x
  3. Step 3: Cross multiply
    129,760.10x = 179,068.65 × 73,171.08
  4. Step 4: Simplify right side
    129,760.10x = 13,102,646,514.64
  5. Step 5: Solve for x
    x = 13,102,646,514.64/129,760.10
  6. Step 6: Final answer
    x = 100,975.93

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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.