Home / 156,837.29-216,435.10-85,217.60

Finding the Fourth Proportional to 156,837.29, 216,435.10 and 85,217.60

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Solution

The fourth proportional to 156,837.29, 216,435.10 and 85,217.60 is: 117,600.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,837.29 : 216,435.10 = 85,217.60 : x
  2. Step 2: Convert to fraction form
    156,837.29/216,435.10 = 85,217.60/x
  3. Step 3: Cross multiply
    156,837.29x = 216,435.10 × 85,217.60
  4. Step 4: Simplify right side
    156,837.29x = 18,444,079,777.76
  5. Step 5: Solve for x
    x = 18,444,079,777.76/156,837.29
  6. Step 6: Final answer
    x = 117,600.09

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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.