Home / 143,020.20-197,368.20-79,358.16

Finding the Fourth Proportional to 143,020.20, 197,368.20 and 79,358.16

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Solution

The fourth proportional to 143,020.20, 197,368.20 and 79,358.16 is: 109,514.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,020.20 : 197,368.20 = 79,358.16 : x
  2. Step 2: Convert to fraction form
    143,020.20/197,368.20 = 79,358.16/x
  3. Step 3: Cross multiply
    143,020.20x = 197,368.20 × 79,358.16
  4. Step 4: Simplify right side
    143,020.20x = 15,662,777,194.51
  5. Step 5: Solve for x
    x = 15,662,777,194.51/143,020.20
  6. Step 6: Final answer
    x = 109,514.44

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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.