Home / 143,195.55-197,519.09-87,980.69

Finding the Fourth Proportional to 143,195.55, 197,519.09 and 87,980.69

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Solution

The fourth proportional to 143,195.55, 197,519.09 and 87,980.69 is: 121,357.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,195.55 : 197,519.09 = 87,980.69 : x
  2. Step 2: Convert to fraction form
    143,195.55/197,519.09 = 87,980.69/x
  3. Step 3: Cross multiply
    143,195.55x = 197,519.09 × 87,980.69
  4. Step 4: Simplify right side
    143,195.55x = 17,377,864,398.87
  5. Step 5: Solve for x
    x = 17,377,864,398.87/143,195.55
  6. Step 6: Final answer
    x = 121,357.57

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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.