Home / 138,743.80-191,467.86-75,083.08

Finding the Fourth Proportional to 138,743.80, 191,467.86 and 75,083.08

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Solution

The fourth proportional to 138,743.80, 191,467.86 and 75,083.08 is: 103,615.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,743.80 : 191,467.86 = 75,083.08 : x
  2. Step 2: Convert to fraction form
    138,743.80/191,467.86 = 75,083.08/x
  3. Step 3: Cross multiply
    138,743.80x = 191,467.86 × 75,083.08
  4. Step 4: Simplify right side
    138,743.80x = 14,375,996,649.81
  5. Step 5: Solve for x
    x = 14,375,996,649.81/138,743.80
  6. Step 6: Final answer
    x = 103,615.42

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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.