Home / 129,997.08-179,222.49-103,228.20

Finding the Fourth Proportional to 129,997.08, 179,222.49 and 103,228.20

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Solution

The fourth proportional to 129,997.08, 179,222.49 and 103,228.20 is: 142,317.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,997.08 : 179,222.49 = 103,228.20 : x
  2. Step 2: Convert to fraction form
    129,997.08/179,222.49 = 103,228.20/x
  3. Step 3: Cross multiply
    129,997.08x = 179,222.49 × 103,228.20
  4. Step 4: Simplify right side
    129,997.08x = 18,500,815,042.22
  5. Step 5: Solve for x
    x = 18,500,815,042.22/129,997.08
  6. Step 6: Final answer
    x = 142,317.16

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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.