Home / 156,640.20-216,163.74-85,020.24

Finding the Fourth Proportional to 156,640.20, 216,163.74 and 85,020.24

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Solution

The fourth proportional to 156,640.20, 216,163.74 and 85,020.24 is: 117,328.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,640.20 : 216,163.74 = 85,020.24 : x
  2. Step 2: Convert to fraction form
    156,640.20/216,163.74 = 85,020.24/x
  3. Step 3: Cross multiply
    156,640.20x = 216,163.74 × 85,020.24
  4. Step 4: Simplify right side
    156,640.20x = 18,378,293,054.10
  5. Step 5: Solve for x
    x = 18,378,293,054.10/156,640.20
  6. Step 6: Final answer
    x = 117,328.07

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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.