Home / 427,635.56-641,456.12-112,089.76

Finding the Fourth Proportional to 427,635.56, 641,456.12 and 112,089.76

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Solution

The fourth proportional to 427,635.56, 641,456.12 and 112,089.76 is: 168,135.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,635.56 : 641,456.12 = 112,089.76 : x
  2. Step 2: Convert to fraction form
    427,635.56/641,456.12 = 112,089.76/x
  3. Step 3: Cross multiply
    427,635.56x = 641,456.12 × 112,089.76
  4. Step 4: Simplify right side
    427,635.56x = 71,900,662,541.33
  5. Step 5: Solve for x
    x = 71,900,662,541.33/427,635.56
  6. Step 6: Final answer
    x = 168,135.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.