Home / 212,067.86-318,034.25-69,886.60

Finding the Fourth Proportional to 212,067.86, 318,034.25 and 69,886.60

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Solution

The fourth proportional to 212,067.86, 318,034.25 and 69,886.60 is: 104,807.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,067.86 : 318,034.25 = 69,886.60 : x
  2. Step 2: Convert to fraction form
    212,067.86/318,034.25 = 69,886.60/x
  3. Step 3: Cross multiply
    212,067.86x = 318,034.25 × 69,886.60
  4. Step 4: Simplify right side
    212,067.86x = 22,226,331,533.61
  5. Step 5: Solve for x
    x = 22,226,331,533.61/212,067.86
  6. Step 6: Final answer
    x = 104,807.64

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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.