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Finding the Fourth Proportional to 181,015.56, 249,807.18 and 100,449

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Solution

The fourth proportional to 181,015.56, 249,807.18 and 100,449 is: 138,622.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,015.56 : 249,807.18 = 100,449 : x
  2. Step 2: Convert to fraction form
    181,015.56/249,807.18 = 100,449/x
  3. Step 3: Cross multiply
    181,015.56x = 249,807.18 × 100,449
  4. Step 4: Simplify right side
    181,015.56x = 25,092,881,423.82
  5. Step 5: Solve for x
    x = 25,092,881,423.82/181,015.56
  6. Step 6: Final answer
    x = 138,622.79

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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.