Home / 126,359.99-189,445.20-76,429.86

Finding the Fourth Proportional to 126,359.99, 189,445.20 and 76,429.86

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Solution

The fourth proportional to 126,359.99, 189,445.20 and 76,429.86 is: 114,587.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,359.99 : 189,445.20 = 76,429.86 : x
  2. Step 2: Convert to fraction form
    126,359.99/189,445.20 = 76,429.86/x
  3. Step 3: Cross multiply
    126,359.99x = 189,445.20 × 76,429.86
  4. Step 4: Simplify right side
    126,359.99x = 14,479,270,113.67
  5. Step 5: Solve for x
    x = 14,479,270,113.67/126,359.99
  6. Step 6: Final answer
    x = 114,587.46

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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.