Home / 212,638.24-319,155-107,532.64

Finding the Fourth Proportional to 212,638.24, 319,155 and 107,532.64

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Solution

The fourth proportional to 212,638.24, 319,155 and 107,532.64 is: 161,398.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,638.24 : 319,155 = 107,532.64 : x
  2. Step 2: Convert to fraction form
    212,638.24/319,155 = 107,532.64/x
  3. Step 3: Cross multiply
    212,638.24x = 319,155 × 107,532.64
  4. Step 4: Simplify right side
    212,638.24x = 34,319,579,719.20
  5. Step 5: Solve for x
    x = 34,319,579,719.20/212,638.24
  6. Step 6: Final answer
    x = 161,398.91

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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.