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Finding the Fourth Proportional to 181,107.70, 249,916.79 and 100,535.18

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Solution

The fourth proportional to 181,107.70, 249,916.79 and 100,535.18 is: 138,731.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,107.70 : 249,916.79 = 100,535.18 : x
  2. Step 2: Convert to fraction form
    181,107.70/249,916.79 = 100,535.18/x
  3. Step 3: Cross multiply
    181,107.70x = 249,916.79 × 100,535.18
  4. Step 4: Simplify right side
    181,107.70x = 25,125,428,469.43
  5. Step 5: Solve for x
    x = 25,125,428,469.43/181,107.70
  6. Step 6: Final answer
    x = 138,731.97

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1.5x scale

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.