Home / 156,640.46-216,158.05-85,018.96

Finding the Fourth Proportional to 156,640.46, 216,158.05 and 85,018.96

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Solution

The fourth proportional to 156,640.46, 216,158.05 and 85,018.96 is: 117,323.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,640.46 : 216,158.05 = 85,018.96 : x
  2. Step 2: Convert to fraction form
    156,640.46/216,158.05 = 85,018.96/x
  3. Step 3: Cross multiply
    156,640.46x = 216,158.05 × 85,018.96
  4. Step 4: Simplify right side
    156,640.46x = 18,377,531,100.74
  5. Step 5: Solve for x
    x = 18,377,531,100.74/156,640.46
  6. Step 6: Final answer
    x = 117,323.02

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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.