Home / 212,654.30-318,886.65-112,791.76

Finding the Fourth Proportional to 212,654.30, 318,886.65 and 112,791.76

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Solution

The fourth proportional to 212,654.30, 318,886.65 and 112,791.76 is: 169,137.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,654.30 : 318,886.65 = 112,791.76 : x
  2. Step 2: Convert to fraction form
    212,654.30/318,886.65 = 112,791.76/x
  3. Step 3: Cross multiply
    212,654.30x = 318,886.65 × 112,791.76
  4. Step 4: Simplify right side
    212,654.30x = 35,967,785,696.79
  5. Step 5: Solve for x
    x = 35,967,785,696.79/212,654.30
  6. Step 6: Final answer
    x = 169,137.36

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1.5x scale

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.