Home / 156,640.14-216,163.81-85,020.17

Finding the Fourth Proportional to 156,640.14, 216,163.81 and 85,020.17

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Solution

The fourth proportional to 156,640.14, 216,163.81 and 85,020.17 is: 117,328.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,640.14 : 216,163.81 = 85,020.17 : x
  2. Step 2: Convert to fraction form
    156,640.14/216,163.81 = 85,020.17/x
  3. Step 3: Cross multiply
    156,640.14x = 216,163.81 × 85,020.17
  4. Step 4: Simplify right side
    156,640.14x = 18,378,282,899.50
  5. Step 5: Solve for x
    x = 18,378,282,899.50/156,640.14
  6. Step 6: Final answer
    x = 117,328.05

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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.