Home / 143,090.98-197,451.33-79,421.96

Finding the Fourth Proportional to 143,090.98, 197,451.33 and 79,421.96

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Solution

The fourth proportional to 143,090.98, 197,451.33 and 79,421.96 is: 109,594.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,090.98 : 197,451.33 = 79,421.96 : x
  2. Step 2: Convert to fraction form
    143,090.98/197,451.33 = 79,421.96/x
  3. Step 3: Cross multiply
    143,090.98x = 197,451.33 × 79,421.96
  4. Step 4: Simplify right side
    143,090.98x = 15,681,971,633.21
  5. Step 5: Solve for x
    x = 15,681,971,633.21/143,090.98
  6. Step 6: Final answer
    x = 109,594.41

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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.