Home / 212,001.54-318,013.38-54,231.36

Finding the Fourth Proportional to 212,001.54, 318,013.38 and 54,231.36

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Solution

The fourth proportional to 212,001.54, 318,013.38 and 54,231.36 is: 81,349.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,001.54 : 318,013.38 = 54,231.36 : x
  2. Step 2: Convert to fraction form
    212,001.54/318,013.38 = 54,231.36/x
  3. Step 3: Cross multiply
    212,001.54x = 318,013.38 × 54,231.36
  4. Step 4: Simplify right side
    212,001.54x = 17,246,298,095.60
  5. Step 5: Solve for x
    x = 17,246,298,095.60/212,001.54
  6. Step 6: Final answer
    x = 81,349.87

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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.