Home / 129,680.69-179,004-75,983.09

Finding the Fourth Proportional to 129,680.69, 179,004 and 75,983.09

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Solution

The fourth proportional to 129,680.69, 179,004 and 75,983.09 is: 104,882.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,680.69 : 179,004 = 75,983.09 : x
  2. Step 2: Convert to fraction form
    129,680.69/179,004 = 75,983.09/x
  3. Step 3: Cross multiply
    129,680.69x = 179,004 × 75,983.09
  4. Step 4: Simplify right side
    129,680.69x = 13,601,276,147.34
  5. Step 5: Solve for x
    x = 13,601,276,147.34/129,680.69
  6. Step 6: Final answer
    x = 104,882.82

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1.5x scale

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.