Home / 156,980.15-216,626.68-85,357.70

Finding the Fourth Proportional to 156,980.15, 216,626.68 and 85,357.70

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Solution

The fourth proportional to 156,980.15, 216,626.68 and 85,357.70 is: 117,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,980.15 : 216,626.68 = 85,357.70 : x
  2. Step 2: Convert to fraction form
    156,980.15/216,626.68 = 85,357.70/x
  3. Step 3: Cross multiply
    156,980.15x = 216,626.68 × 85,357.70
  4. Step 4: Simplify right side
    156,980.15x = 18,490,755,163.44
  5. Step 5: Solve for x
    x = 18,490,755,163.44/156,980.15
  6. Step 6: Final answer
    x = 117,790.40

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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.