Home / 143,331.84-197,765.82-86,742

Finding the Fourth Proportional to 143,331.84, 197,765.82 and 86,742

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Solution

The fourth proportional to 143,331.84, 197,765.82 and 86,742 is: 119,684.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,331.84 : 197,765.82 = 86,742 : x
  2. Step 2: Convert to fraction form
    143,331.84/197,765.82 = 86,742/x
  3. Step 3: Cross multiply
    143,331.84x = 197,765.82 × 86,742
  4. Step 4: Simplify right side
    143,331.84x = 17,154,602,758.44
  5. Step 5: Solve for x
    x = 17,154,602,758.44/143,331.84
  6. Step 6: Final answer
    x = 119,684.52

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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.