Home / 142,181.91-213,103.22-66,178.17

Finding the Fourth Proportional to 142,181.91, 213,103.22 and 66,178.17

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Solution

The fourth proportional to 142,181.91, 213,103.22 and 66,178.17 is: 99,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,181.91 : 213,103.22 = 66,178.17 : x
  2. Step 2: Convert to fraction form
    142,181.91/213,103.22 = 66,178.17/x
  3. Step 3: Cross multiply
    142,181.91x = 213,103.22 × 66,178.17
  4. Step 4: Simplify right side
    142,181.91x = 14,102,780,789.82
  5. Step 5: Solve for x
    x = 14,102,780,789.82/142,181.91
  6. Step 6: Final answer
    x = 99,188.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.