Home / 156,976.15-216,621.16-85,353.70

Finding the Fourth Proportional to 156,976.15, 216,621.16 and 85,353.70

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Solution

The fourth proportional to 156,976.15, 216,621.16 and 85,353.70 is: 117,784.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,976.15 : 216,621.16 = 85,353.70 : x
  2. Step 2: Convert to fraction form
    156,976.15/216,621.16 = 85,353.70/x
  3. Step 3: Cross multiply
    156,976.15x = 216,621.16 × 85,353.70
  4. Step 4: Simplify right side
    156,976.15x = 18,489,417,504.29
  5. Step 5: Solve for x
    x = 18,489,417,504.29/156,976.15
  6. Step 6: Final answer
    x = 117,784.88

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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.