Home / 112,290.75-154,961.37-61,989.75

Finding the Fourth Proportional to 112,290.75, 154,961.37 and 61,989.75

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Solution

The fourth proportional to 112,290.75, 154,961.37 and 61,989.75 is: 85,545.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,290.75 : 154,961.37 = 61,989.75 : x
  2. Step 2: Convert to fraction form
    112,290.75/154,961.37 = 61,989.75/x
  3. Step 3: Cross multiply
    112,290.75x = 154,961.37 × 61,989.75
  4. Step 4: Simplify right side
    112,290.75x = 9,606,016,585.96
  5. Step 5: Solve for x
    x = 9,606,016,585.96/112,290.75
  6. Step 6: Final answer
    x = 85,545.93

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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.