Home / 148,986.32-205,601.12-81,918.32

Finding the Fourth Proportional to 148,986.32, 205,601.12 and 81,918.32

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Solution

The fourth proportional to 148,986.32, 205,601.12 and 81,918.32 is: 113,047.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,986.32 : 205,601.12 = 81,918.32 : x
  2. Step 2: Convert to fraction form
    148,986.32/205,601.12 = 81,918.32/x
  3. Step 3: Cross multiply
    148,986.32x = 205,601.12 × 81,918.32
  4. Step 4: Simplify right side
    148,986.32x = 16,842,498,340.52
  5. Step 5: Solve for x
    x = 16,842,498,340.52/148,986.32
  6. Step 6: Final answer
    x = 113,047.28

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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.