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Finding the Fourth Proportional to 112,210, 154,853.16 and 61,912.24

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Solution

The fourth proportional to 112,210, 154,853.16 and 61,912.24 is: 85,440.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,210 : 154,853.16 = 61,912.24 : x
  2. Step 2: Convert to fraction form
    112,210/154,853.16 = 61,912.24/x
  3. Step 3: Cross multiply
    112,210x = 154,853.16 × 61,912.24
  4. Step 4: Simplify right side
    112,210x = 9,587,306,006.68
  5. Step 5: Solve for x
    x = 9,587,306,006.68/112,210
  6. Step 6: Final answer
    x = 85,440.75

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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.