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Finding the Fourth Proportional to 181,105.52, 249,913.11 and 100,526.70

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Solution

The fourth proportional to 181,105.52, 249,913.11 and 100,526.70 is: 138,719.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,105.52 : 249,913.11 = 100,526.70 : x
  2. Step 2: Convert to fraction form
    181,105.52/249,913.11 = 100,526.70/x
  3. Step 3: Cross multiply
    181,105.52x = 249,913.11 × 100,526.70
  4. Step 4: Simplify right side
    181,105.52x = 25,122,940,612.01
  5. Step 5: Solve for x
    x = 25,122,940,612.01/181,105.52
  6. Step 6: Final answer
    x = 138,719.91

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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.