Home / 151,240.73-208,690.94-100,174.28

Finding the Fourth Proportional to 151,240.73, 208,690.94 and 100,174.28

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Solution

The fourth proportional to 151,240.73, 208,690.94 and 100,174.28 is: 138,226.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,240.73 : 208,690.94 = 100,174.28 : x
  2. Step 2: Convert to fraction form
    151,240.73/208,690.94 = 100,174.28/x
  3. Step 3: Cross multiply
    151,240.73x = 208,690.94 × 100,174.28
  4. Step 4: Simplify right side
    151,240.73x = 20,905,463,112.70
  5. Step 5: Solve for x
    x = 20,905,463,112.70/151,240.73
  6. Step 6: Final answer
    x = 138,226.41

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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.