Home / 150,732.25-208,009.76-81,821.78

Finding the Fourth Proportional to 150,732.25, 208,009.76 and 81,821.78

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Solution

The fourth proportional to 150,732.25, 208,009.76 and 81,821.78 is: 112,913.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,732.25 : 208,009.76 = 81,821.78 : x
  2. Step 2: Convert to fraction form
    150,732.25/208,009.76 = 81,821.78/x
  3. Step 3: Cross multiply
    150,732.25x = 208,009.76 × 81,821.78
  4. Step 4: Simplify right side
    150,732.25x = 17,019,728,820.57
  5. Step 5: Solve for x
    x = 17,019,728,820.57/150,732.25
  6. Step 6: Final answer
    x = 112,913.65

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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.