Home / 156,631.27-216,151.35-85,011.31

Finding the Fourth Proportional to 156,631.27, 216,151.35 and 85,011.31

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Solution

The fourth proportional to 156,631.27, 216,151.35 and 85,011.31 is: 117,315.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,631.27 : 216,151.35 = 85,011.31 : x
  2. Step 2: Convert to fraction form
    156,631.27/216,151.35 = 85,011.31/x
  3. Step 3: Cross multiply
    156,631.27x = 216,151.35 × 85,011.31
  4. Step 4: Simplify right side
    156,631.27x = 18,375,309,188.75
  5. Step 5: Solve for x
    x = 18,375,309,188.75/156,631.27
  6. Step 6: Final answer
    x = 117,315.71

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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.