Home / 112,108.25-154,621.91-71,825.79

Finding the Fourth Proportional to 112,108.25, 154,621.91 and 71,825.79

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Solution

The fourth proportional to 112,108.25, 154,621.91 and 71,825.79 is: 99,063.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,108.25 : 154,621.91 = 71,825.79 : x
  2. Step 2: Convert to fraction form
    112,108.25/154,621.91 = 71,825.79/x
  3. Step 3: Cross multiply
    112,108.25x = 154,621.91 × 71,825.79
  4. Step 4: Simplify right side
    112,108.25x = 11,105,840,477.93
  5. Step 5: Solve for x
    x = 11,105,840,477.93/112,108.25
  6. Step 6: Final answer
    x = 99,063.55

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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.