Home / 148,928.80-205,519.44-81,859.36

Finding the Fourth Proportional to 148,928.80, 205,519.44 and 81,859.36

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Solution

The fourth proportional to 148,928.80, 205,519.44 and 81,859.36 is: 112,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,928.80 : 205,519.44 = 81,859.36 : x
  2. Step 2: Convert to fraction form
    148,928.80/205,519.44 = 81,859.36/x
  3. Step 3: Cross multiply
    148,928.80x = 205,519.44 × 81,859.36
  4. Step 4: Simplify right side
    148,928.80x = 16,823,689,825.96
  5. Step 5: Solve for x
    x = 16,823,689,825.96/148,928.80
  6. Step 6: Final answer
    x = 112,964.65

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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.