Home / 212,870.82-319,009.68-107,566.86

Finding the Fourth Proportional to 212,870.82, 319,009.68 and 107,566.86

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Solution

The fourth proportional to 212,870.82, 319,009.68 and 107,566.86 is: 161,200.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,870.82 : 319,009.68 = 107,566.86 : x
  2. Step 2: Convert to fraction form
    212,870.82/319,009.68 = 107,566.86/x
  3. Step 3: Cross multiply
    212,870.82x = 319,009.68 × 107,566.86
  4. Step 4: Simplify right side
    212,870.82x = 34,314,869,587.20
  5. Step 5: Solve for x
    x = 34,314,869,587.20/212,870.82
  6. Step 6: Final answer
    x = 161,200.44

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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.