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Finding the Fourth Proportional to 111,974.40, 154,526.08 and 61,672.96

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Solution

The fourth proportional to 111,974.40, 154,526.08 and 61,672.96 is: 85,109.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,974.40 : 154,526.08 = 61,672.96 : x
  2. Step 2: Convert to fraction form
    111,974.40/154,526.08 = 61,672.96/x
  3. Step 3: Cross multiply
    111,974.40x = 154,526.08 × 61,672.96
  4. Step 4: Simplify right side
    111,974.40x = 9,530,080,750.80
  5. Step 5: Solve for x
    x = 9,530,080,750.80/111,974.40
  6. Step 6: Final answer
    x = 85,109.46

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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.