Home / 114,766.86-172,156.07-81,391.62

Finding the Fourth Proportional to 114,766.86, 172,156.07 and 81,391.62

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Solution

The fourth proportional to 114,766.86, 172,156.07 and 81,391.62 is: 122,091.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,766.86 : 172,156.07 = 81,391.62 : x
  2. Step 2: Convert to fraction form
    114,766.86/172,156.07 = 81,391.62/x
  3. Step 3: Cross multiply
    114,766.86x = 172,156.07 × 81,391.62
  4. Step 4: Simplify right side
    114,766.86x = 14,012,061,430.13
  5. Step 5: Solve for x
    x = 14,012,061,430.13/114,766.86
  6. Step 6: Final answer
    x = 122,091.53

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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.