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Finding the Fourth Proportional to 181,085.33, 249,885.96 and 100,512.87

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Solution

The fourth proportional to 181,085.33, 249,885.96 and 100,512.87 is: 138,701.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,085.33 : 249,885.96 = 100,512.87 : x
  2. Step 2: Convert to fraction form
    181,085.33/249,885.96 = 100,512.87/x
  3. Step 3: Cross multiply
    181,085.33x = 249,885.96 × 100,512.87
  4. Step 4: Simplify right side
    181,085.33x = 25,116,755,012.31
  5. Step 5: Solve for x
    x = 25,116,755,012.31/181,085.33
  6. Step 6: Final answer
    x = 138,701.22

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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.