Home / 212,897.40-319,556.20-113,057.31

Finding the Fourth Proportional to 212,897.40, 319,556.20 and 113,057.31

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Solution

The fourth proportional to 212,897.40, 319,556.20 and 113,057.31 is: 169,697.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,897.40 : 319,556.20 = 113,057.31 : x
  2. Step 2: Convert to fraction form
    212,897.40/319,556.20 = 113,057.31/x
  3. Step 3: Cross multiply
    212,897.40x = 319,556.20 × 113,057.31
  4. Step 4: Simplify right side
    212,897.40x = 36,128,162,869.02
  5. Step 5: Solve for x
    x = 36,128,162,869.02/212,897.40
  6. Step 6: Final answer
    x = 169,697.53

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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.