Home / 156,638.08-216,157.12-85,018.24

Finding the Fourth Proportional to 156,638.08, 216,157.12 and 85,018.24

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Solution

The fourth proportional to 156,638.08, 216,157.12 and 85,018.24 is: 117,323.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,638.08 : 216,157.12 = 85,018.24 : x
  2. Step 2: Convert to fraction form
    156,638.08/216,157.12 = 85,018.24/x
  3. Step 3: Cross multiply
    156,638.08x = 216,157.12 × 85,018.24
  4. Step 4: Simplify right side
    156,638.08x = 18,377,297,905.87
  5. Step 5: Solve for x
    x = 18,377,297,905.87/156,638.08
  6. Step 6: Final answer
    x = 117,323.31

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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.