Home / 143,115.46-197,501.59-79,453.91

Finding the Fourth Proportional to 143,115.46, 197,501.59 and 79,453.91

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Solution

The fourth proportional to 143,115.46, 197,501.59 and 79,453.91 is: 109,647.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,115.46 : 197,501.59 = 79,453.91 : x
  2. Step 2: Convert to fraction form
    143,115.46/197,501.59 = 79,453.91/x
  3. Step 3: Cross multiply
    143,115.46x = 197,501.59 × 79,453.91
  4. Step 4: Simplify right side
    143,115.46x = 15,692,274,149.79
  5. Step 5: Solve for x
    x = 15,692,274,149.79/143,115.46
  6. Step 6: Final answer
    x = 109,647.65

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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.