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Finding the Fourth Proportional to 181,081.89, 249,891.12 and 100,510.11

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Solution

The fourth proportional to 181,081.89, 249,891.12 and 100,510.11 is: 138,702.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,081.89 : 249,891.12 = 100,510.11 : x
  2. Step 2: Convert to fraction form
    181,081.89/249,891.12 = 100,510.11/x
  3. Step 3: Cross multiply
    181,081.89x = 249,891.12 × 100,510.11
  4. Step 4: Simplify right side
    181,081.89x = 25,116,583,959.22
  5. Step 5: Solve for x
    x = 25,116,583,959.22/181,081.89
  6. Step 6: Final answer
    x = 138,702.90

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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.