Home / 212,865.57-319,001.81-107,561.61

Finding the Fourth Proportional to 212,865.57, 319,001.81 and 107,561.61

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Solution

The fourth proportional to 212,865.57, 319,001.81 and 107,561.61 is: 161,192.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,865.57 : 319,001.81 = 107,561.61 : x
  2. Step 2: Convert to fraction form
    212,865.57/319,001.81 = 107,561.61/x
  3. Step 3: Cross multiply
    212,865.57x = 319,001.81 × 107,561.61
  4. Step 4: Simplify right side
    212,865.57x = 34,312,347,738.71
  5. Step 5: Solve for x
    x = 34,312,347,738.71/212,865.57
  6. Step 6: Final answer
    x = 161,192.57

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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.