Home / 112,155.74-154,735.84-71,891.71

Finding the Fourth Proportional to 112,155.74, 154,735.84 and 71,891.71

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Solution

The fourth proportional to 112,155.74, 154,735.84 and 71,891.71 is: 99,185.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,155.74 : 154,735.84 = 71,891.71 : x
  2. Step 2: Convert to fraction form
    112,155.74/154,735.84 = 71,891.71/x
  3. Step 3: Cross multiply
    112,155.74x = 154,735.84 × 71,891.71
  4. Step 4: Simplify right side
    112,155.74x = 11,124,223,362.21
  5. Step 5: Solve for x
    x = 11,124,223,362.21/112,155.74
  6. Step 6: Final answer
    x = 99,185.50

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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.