Home / 156,153.20-215,483.26-91,613.46

Finding the Fourth Proportional to 156,153.20, 215,483.26 and 91,613.46

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Solution

The fourth proportional to 156,153.20, 215,483.26 and 91,613.46 is: 126,421.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,153.20 : 215,483.26 = 91,613.46 : x
  2. Step 2: Convert to fraction form
    156,153.20/215,483.26 = 91,613.46/x
  3. Step 3: Cross multiply
    156,153.20x = 215,483.26 × 91,613.46
  4. Step 4: Simplify right side
    156,153.20x = 19,741,167,020.68
  5. Step 5: Solve for x
    x = 19,741,167,020.68/156,153.20
  6. Step 6: Final answer
    x = 126,421.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.