Home / 112,017.13-154,479.79-81,754.52

Finding the Fourth Proportional to 112,017.13, 154,479.79 and 81,754.52

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Solution

The fourth proportional to 112,017.13, 154,479.79 and 81,754.52 is: 112,745.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,017.13 : 154,479.79 = 81,754.52 : x
  2. Step 2: Convert to fraction form
    112,017.13/154,479.79 = 81,754.52/x
  3. Step 3: Cross multiply
    112,017.13x = 154,479.79 × 81,754.52
  4. Step 4: Simplify right side
    112,017.13x = 12,629,420,410.95
  5. Step 5: Solve for x
    x = 12,629,420,410.95/112,017.13
  6. Step 6: Final answer
    x = 112,745.44

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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.