Home / 156,977.15-216,622.54-85,354.70

Finding the Fourth Proportional to 156,977.15, 216,622.54 and 85,354.70

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Solution

The fourth proportional to 156,977.15, 216,622.54 and 85,354.70 is: 117,786.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,977.15 : 216,622.54 = 85,354.70 : x
  2. Step 2: Convert to fraction form
    156,977.15/216,622.54 = 85,354.70/x
  3. Step 3: Cross multiply
    156,977.15x = 216,622.54 × 85,354.70
  4. Step 4: Simplify right side
    156,977.15x = 18,489,751,914.94
  5. Step 5: Solve for x
    x = 18,489,751,914.94/156,977.15
  6. Step 6: Final answer
    x = 117,786.26

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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.