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Finding the Fourth Proportional to 181,135.70, 249,954.78 and 100,556.97

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Solution

The fourth proportional to 181,135.70, 249,954.78 and 100,556.97 is: 138,761.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,135.70 : 249,954.78 = 100,556.97 : x
  2. Step 2: Convert to fraction form
    181,135.70/249,954.78 = 100,556.97/x
  3. Step 3: Cross multiply
    181,135.70x = 249,954.78 × 100,556.97
  4. Step 4: Simplify right side
    181,135.70x = 25,134,695,313.82
  5. Step 5: Solve for x
    x = 25,134,695,313.82/181,135.70
  6. Step 6: Final answer
    x = 138,761.69

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1.5x scale

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.