Home / 112,215.80-154,846.67-78,297.18

Finding the Fourth Proportional to 112,215.80, 154,846.67 and 78,297.18

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Solution

The fourth proportional to 112,215.80, 154,846.67 and 78,297.18 is: 108,042.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,215.80 : 154,846.67 = 78,297.18 : x
  2. Step 2: Convert to fraction form
    112,215.80/154,846.67 = 78,297.18/x
  3. Step 3: Cross multiply
    112,215.80x = 154,846.67 × 78,297.18
  4. Step 4: Simplify right side
    112,215.80x = 12,124,057,201.90
  5. Step 5: Solve for x
    x = 12,124,057,201.90/112,215.80
  6. Step 6: Final answer
    x = 108,042.34

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1.5x scale

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.