Home / 131,421.90-197,181.45-126,561.90

Finding the Fourth Proportional to 131,421.90, 197,181.45 and 126,561.90

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Solution

The fourth proportional to 131,421.90, 197,181.45 and 126,561.90 is: 189,889.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.90 : 197,181.45 = 126,561.90 : x
  2. Step 2: Convert to fraction form
    131,421.90/197,181.45 = 126,561.90/x
  3. Step 3: Cross multiply
    131,421.90x = 197,181.45 × 126,561.90
  4. Step 4: Simplify right side
    131,421.90x = 24,955,658,956.76
  5. Step 5: Solve for x
    x = 24,955,658,956.76/131,421.90
  6. Step 6: Final answer
    x = 189,889.65

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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.