Home / 143,346.40-197,814.16-79,686.88

Finding the Fourth Proportional to 143,346.40, 197,814.16 and 79,686.88

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Solution

The fourth proportional to 143,346.40, 197,814.16 and 79,686.88 is: 109,965.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,346.40 : 197,814.16 = 79,686.88 : x
  2. Step 2: Convert to fraction form
    143,346.40/197,814.16 = 79,686.88/x
  3. Step 3: Cross multiply
    143,346.40x = 197,814.16 × 79,686.88
  4. Step 4: Simplify right side
    143,346.40x = 15,763,193,230.22
  5. Step 5: Solve for x
    x = 15,763,193,230.22/143,346.40
  6. Step 6: Final answer
    x = 109,965.74

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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.