Home / 128,506.45-191,839.93-111,695.95

Finding the Fourth Proportional to 128,506.45, 191,839.93 and 111,695.95

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Solution

The fourth proportional to 128,506.45, 191,839.93 and 111,695.95 is: 166,744.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,506.45 : 191,839.93 = 111,695.95 : x
  2. Step 2: Convert to fraction form
    128,506.45/191,839.93 = 111,695.95/x
  3. Step 3: Cross multiply
    128,506.45x = 191,839.93 × 111,695.95
  4. Step 4: Simplify right side
    128,506.45x = 21,427,743,229.28
  5. Step 5: Solve for x
    x = 21,427,743,229.28/128,506.45
  6. Step 6: Final answer
    x = 166,744.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.