Home / 112,291.36-154,961.76-61,990

Finding the Fourth Proportional to 112,291.36, 154,961.76 and 61,990

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Solution

The fourth proportional to 112,291.36, 154,961.76 and 61,990 is: 85,546.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,291.36 : 154,961.76 = 61,990 : x
  2. Step 2: Convert to fraction form
    112,291.36/154,961.76 = 61,990/x
  3. Step 3: Cross multiply
    112,291.36x = 154,961.76 × 61,990
  4. Step 4: Simplify right side
    112,291.36x = 9,606,079,502.40
  5. Step 5: Solve for x
    x = 9,606,079,502.40/112,291.36
  6. Step 6: Final answer
    x = 85,546.03

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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.