Home / 171,512.49-257,131.32-81,510.03

Finding the Fourth Proportional to 171,512.49, 257,131.32 and 81,510.03

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Solution

The fourth proportional to 171,512.49, 257,131.32 and 81,510.03 is: 122,199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,512.49 : 257,131.32 = 81,510.03 : x
  2. Step 2: Convert to fraction form
    171,512.49/257,131.32 = 81,510.03/x
  3. Step 3: Cross multiply
    171,512.49x = 257,131.32 × 81,510.03
  4. Step 4: Simplify right side
    171,512.49x = 20,958,781,607.14
  5. Step 5: Solve for x
    x = 20,958,781,607.14/171,512.49
  6. Step 6: Final answer
    x = 122,199.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.