Home / 156,861.32-216,462.65-85,239.77

Finding the Fourth Proportional to 156,861.32, 216,462.65 and 85,239.77

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Solution

The fourth proportional to 156,861.32, 216,462.65 and 85,239.77 is: 117,627.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,861.32 : 216,462.65 = 85,239.77 : x
  2. Step 2: Convert to fraction form
    156,861.32/216,462.65 = 85,239.77/x
  3. Step 3: Cross multiply
    156,861.32x = 216,462.65 × 85,239.77
  4. Step 4: Simplify right side
    156,861.32x = 18,451,224,991.08
  5. Step 5: Solve for x
    x = 18,451,224,991.08/156,861.32
  6. Step 6: Final answer
    x = 117,627.63

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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.