Home / 156,620.48-216,136.44-85,000.55

Finding the Fourth Proportional to 156,620.48, 216,136.44 and 85,000.55

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Solution

The fourth proportional to 156,620.48, 216,136.44 and 85,000.55 is: 117,300.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,620.48 : 216,136.44 = 85,000.55 : x
  2. Step 2: Convert to fraction form
    156,620.48/216,136.44 = 85,000.55/x
  3. Step 3: Cross multiply
    156,620.48x = 216,136.44 × 85,000.55
  4. Step 4: Simplify right side
    156,620.48x = 18,371,715,850.04
  5. Step 5: Solve for x
    x = 18,371,715,850.04/156,620.48
  6. Step 6: Final answer
    x = 117,300.85

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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.