Home / 143,037.36-197,393.76-79,377.84

Finding the Fourth Proportional to 143,037.36, 197,393.76 and 79,377.84

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Solution

The fourth proportional to 143,037.36, 197,393.76 and 79,377.84 is: 109,542.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,037.36 : 197,393.76 = 79,377.84 : x
  2. Step 2: Convert to fraction form
    143,037.36/197,393.76 = 79,377.84/x
  3. Step 3: Cross multiply
    143,037.36x = 197,393.76 × 79,377.84
  4. Step 4: Simplify right side
    143,037.36x = 15,668,690,298.28
  5. Step 5: Solve for x
    x = 15,668,690,298.28/143,037.36
  6. Step 6: Final answer
    x = 109,542.64

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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.