Home / 156,974.16-216,622.08-85,352.16

Finding the Fourth Proportional to 156,974.16, 216,622.08 and 85,352.16

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Solution

The fourth proportional to 156,974.16, 216,622.08 and 85,352.16 is: 117,784.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,974.16 : 216,622.08 = 85,352.16 : x
  2. Step 2: Convert to fraction form
    156,974.16/216,622.08 = 85,352.16/x
  3. Step 3: Cross multiply
    156,974.16x = 216,622.08 × 85,352.16
  4. Step 4: Simplify right side
    156,974.16x = 18,489,162,431.69
  5. Step 5: Solve for x
    x = 18,489,162,431.69/156,974.16
  6. Step 6: Final answer
    x = 117,784.75

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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.