Home / 150,821.31-208,110.24-87,146.80

Finding the Fourth Proportional to 150,821.31, 208,110.24 and 87,146.80

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Solution

The fourth proportional to 150,821.31, 208,110.24 and 87,146.80 is: 120,249.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,821.31 : 208,110.24 = 87,146.80 : x
  2. Step 2: Convert to fraction form
    150,821.31/208,110.24 = 87,146.80/x
  3. Step 3: Cross multiply
    150,821.31x = 208,110.24 × 87,146.80
  4. Step 4: Simplify right side
    150,821.31x = 18,136,141,463.23
  5. Step 5: Solve for x
    x = 18,136,141,463.23/150,821.31
  6. Step 6: Final answer
    x = 120,249.20

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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.