Home / 171,318.40-256,977.60-115,331.20

Finding the Fourth Proportional to 171,318.40, 256,977.60 and 115,331.20

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Solution

The fourth proportional to 171,318.40, 256,977.60 and 115,331.20 is: 172,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,318.40 : 256,977.60 = 115,331.20 : x
  2. Step 2: Convert to fraction form
    171,318.40/256,977.60 = 115,331.20/x
  3. Step 3: Cross multiply
    171,318.40x = 256,977.60 × 115,331.20
  4. Step 4: Simplify right side
    171,318.40x = 29,637,534,981.12
  5. Step 5: Solve for x
    x = 29,637,534,981.12/171,318.40
  6. Step 6: Final answer
    x = 172,996.80

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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.