Home / 148,837.88-205,399.50-81,774.20

Finding the Fourth Proportional to 148,837.88, 205,399.50 and 81,774.20

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Solution

The fourth proportional to 148,837.88, 205,399.50 and 81,774.20 is: 112,850.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,837.88 : 205,399.50 = 81,774.20 : x
  2. Step 2: Convert to fraction form
    148,837.88/205,399.50 = 81,774.20/x
  3. Step 3: Cross multiply
    148,837.88x = 205,399.50 × 81,774.20
  4. Step 4: Simplify right side
    148,837.88x = 16,796,379,792.90
  5. Step 5: Solve for x
    x = 16,796,379,792.90/148,837.88
  6. Step 6: Final answer
    x = 112,850.17

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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.