Home / 212,842.06-319,263.08-72,601.90

Finding the Fourth Proportional to 212,842.06, 319,263.08 and 72,601.90

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Solution

The fourth proportional to 212,842.06, 319,263.08 and 72,601.90 is: 108,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,842.06 : 319,263.08 = 72,601.90 : x
  2. Step 2: Convert to fraction form
    212,842.06/319,263.08 = 72,601.90/x
  3. Step 3: Cross multiply
    212,842.06x = 319,263.08 × 72,601.90
  4. Step 4: Simplify right side
    212,842.06x = 23,179,106,207.85
  5. Step 5: Solve for x
    x = 23,179,106,207.85/212,842.06
  6. Step 6: Final answer
    x = 108,902.85

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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.