Home / 156,640.74-216,158.43-85,019.23

Finding the Fourth Proportional to 156,640.74, 216,158.43 and 85,019.23

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Solution

The fourth proportional to 156,640.74, 216,158.43 and 85,019.23 is: 117,323.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,640.74 : 216,158.43 = 85,019.23 : x
  2. Step 2: Convert to fraction form
    156,640.74/216,158.43 = 85,019.23/x
  3. Step 3: Cross multiply
    156,640.74x = 216,158.43 × 85,019.23
  4. Step 4: Simplify right side
    156,640.74x = 18,377,622,195.82
  5. Step 5: Solve for x
    x = 18,377,622,195.82/156,640.74
  6. Step 6: Final answer
    x = 117,323.39

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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.