Home / 131,191.12-196,815.90-42,442.64

Finding the Fourth Proportional to 131,191.12, 196,815.90 and 42,442.64

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Solution

The fourth proportional to 131,191.12, 196,815.90 and 42,442.64 is: 63,673.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,191.12 : 196,815.90 = 42,442.64 : x
  2. Step 2: Convert to fraction form
    131,191.12/196,815.90 = 42,442.64/x
  3. Step 3: Cross multiply
    131,191.12x = 196,815.90 × 42,442.64
  4. Step 4: Simplify right side
    131,191.12x = 8,353,386,389.98
  5. Step 5: Solve for x
    x = 8,353,386,389.98/131,191.12
  6. Step 6: Final answer
    x = 63,673.41

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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.