Home / 143,127.11-197,506.27-79,464.89

Finding the Fourth Proportional to 143,127.11, 197,506.27 and 79,464.89

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Solution

The fourth proportional to 143,127.11, 197,506.27 and 79,464.89 is: 109,656.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,127.11 : 197,506.27 = 79,464.89 : x
  2. Step 2: Convert to fraction form
    143,127.11/197,506.27 = 79,464.89/x
  3. Step 3: Cross multiply
    143,127.11x = 197,506.27 × 79,464.89
  4. Step 4: Simplify right side
    143,127.11x = 15,694,814,019.86
  5. Step 5: Solve for x
    x = 15,694,814,019.86/143,127.11
  6. Step 6: Final answer
    x = 109,656.47

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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.