Home / 143,031.32-197,383.26-79,379.36

Finding the Fourth Proportional to 143,031.32, 197,383.26 and 79,379.36

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Solution

The fourth proportional to 143,031.32, 197,383.26 and 79,379.36 is: 109,543.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,031.32 : 197,383.26 = 79,379.36 : x
  2. Step 2: Convert to fraction form
    143,031.32/197,383.26 = 79,379.36/x
  3. Step 3: Cross multiply
    143,031.32x = 197,383.26 × 79,379.36
  4. Step 4: Simplify right side
    143,031.32x = 15,668,156,853.51
  5. Step 5: Solve for x
    x = 15,668,156,853.51/143,031.32
  6. Step 6: Final answer
    x = 109,543.54

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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.