Home / 171,640.10-257,124.98-81,554.61

Finding the Fourth Proportional to 171,640.10, 257,124.98 and 81,554.61

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Solution

The fourth proportional to 171,640.10, 257,124.98 and 81,554.61 is: 122,172.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,640.10 : 257,124.98 = 81,554.61 : x
  2. Step 2: Convert to fraction form
    171,640.10/257,124.98 = 81,554.61/x
  3. Step 3: Cross multiply
    171,640.10x = 257,124.98 × 81,554.61
  4. Step 4: Simplify right side
    171,640.10x = 20,969,727,465.16
  5. Step 5: Solve for x
    x = 20,969,727,465.16/171,640.10
  6. Step 6: Final answer
    x = 122,172.66

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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.