Home / 156,723.96-216,279.50-85,105.18

Finding the Fourth Proportional to 156,723.96, 216,279.50 and 85,105.18

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Solution

The fourth proportional to 156,723.96, 216,279.50 and 85,105.18 is: 117,445.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,723.96 : 216,279.50 = 85,105.18 : x
  2. Step 2: Convert to fraction form
    156,723.96/216,279.50 = 85,105.18/x
  3. Step 3: Cross multiply
    156,723.96x = 216,279.50 × 85,105.18
  4. Step 4: Simplify right side
    156,723.96x = 18,406,504,696.41
  5. Step 5: Solve for x
    x = 18,406,504,696.41/156,723.96
  6. Step 6: Final answer
    x = 117,445.38

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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.