Home / 151,938.35-209,703.94-100,164.61

Finding the Fourth Proportional to 151,938.35, 209,703.94 and 100,164.61

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Solution

The fourth proportional to 151,938.35, 209,703.94 and 100,164.61 is: 138,246.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,938.35 : 209,703.94 = 100,164.61 : x
  2. Step 2: Convert to fraction form
    151,938.35/209,703.94 = 100,164.61/x
  3. Step 3: Cross multiply
    151,938.35x = 209,703.94 × 100,164.61
  4. Step 4: Simplify right side
    151,938.35x = 21,004,912,197.70
  5. Step 5: Solve for x
    x = 21,004,912,197.70/151,938.35
  6. Step 6: Final answer
    x = 138,246.28

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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.