Home / 156,620.30-216,136.01-85,000.32

Finding the Fourth Proportional to 156,620.30, 216,136.01 and 85,000.32

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Solution

The fourth proportional to 156,620.30, 216,136.01 and 85,000.32 is: 117,300.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,620.30 : 216,136.01 = 85,000.32 : x
  2. Step 2: Convert to fraction form
    156,620.30/216,136.01 = 85,000.32/x
  3. Step 3: Cross multiply
    156,620.30x = 216,136.01 × 85,000.32
  4. Step 4: Simplify right side
    156,620.30x = 18,371,630,226.02
  5. Step 5: Solve for x
    x = 18,371,630,226.02/156,620.30
  6. Step 6: Final answer
    x = 117,300.44

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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.