Home / 131,358.18-197,066.10-42,620.64

Finding the Fourth Proportional to 131,358.18, 197,066.10 and 42,620.64

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Solution

The fourth proportional to 131,358.18, 197,066.10 and 42,620.64 is: 63,940.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,358.18 : 197,066.10 = 42,620.64 : x
  2. Step 2: Convert to fraction form
    131,358.18/197,066.10 = 42,620.64/x
  3. Step 3: Cross multiply
    131,358.18x = 197,066.10 × 42,620.64
  4. Step 4: Simplify right side
    131,358.18x = 8,399,083,304.30
  5. Step 5: Solve for x
    x = 8,399,083,304.30/131,358.18
  6. Step 6: Final answer
    x = 63,940.31

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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.