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Finding the Fourth Proportional to 181,090.55, 249,904.76 and 100,517.88

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Solution

The fourth proportional to 181,090.55, 249,904.76 and 100,517.88 is: 138,714.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,090.55 : 249,904.76 = 100,517.88 : x
  2. Step 2: Convert to fraction form
    181,090.55/249,904.76 = 100,517.88/x
  3. Step 3: Cross multiply
    181,090.55x = 249,904.76 × 100,517.88
  4. Step 4: Simplify right side
    181,090.55x = 25,119,896,174.52
  5. Step 5: Solve for x
    x = 25,119,896,174.52/181,090.55
  6. Step 6: Final answer
    x = 138,714.56

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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.