Home / 143,087.76-197,456.04-79,424.28

Finding the Fourth Proportional to 143,087.76, 197,456.04 and 79,424.28

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Solution

The fourth proportional to 143,087.76, 197,456.04 and 79,424.28 is: 109,602.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,087.76 : 197,456.04 = 79,424.28 : x
  2. Step 2: Convert to fraction form
    143,087.76/197,456.04 = 79,424.28/x
  3. Step 3: Cross multiply
    143,087.76x = 197,456.04 × 79,424.28
  4. Step 4: Simplify right side
    143,087.76x = 15,682,803,808.65
  5. Step 5: Solve for x
    x = 15,682,803,808.65/143,087.76
  6. Step 6: Final answer
    x = 109,602.69

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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.