Home / 251,291.11-346,782.87-138,121.15

Finding the Fourth Proportional to 251,291.11, 346,782.87 and 138,121.15

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Solution

The fourth proportional to 251,291.11, 346,782.87 and 138,121.15 is: 190,607.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,291.11 : 346,782.87 = 138,121.15 : x
  2. Step 2: Convert to fraction form
    251,291.11/346,782.87 = 138,121.15/x
  3. Step 3: Cross multiply
    251,291.11x = 346,782.87 × 138,121.15
  4. Step 4: Simplify right side
    251,291.11x = 47,898,048,804.70
  5. Step 5: Solve for x
    x = 47,898,048,804.70/251,291.11
  6. Step 6: Final answer
    x = 190,607.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.