Home / 156,788.60-216,369.11-85,169.21

Finding the Fourth Proportional to 156,788.60, 216,369.11 and 85,169.21

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Solution

The fourth proportional to 156,788.60, 216,369.11 and 85,169.21 is: 117,533.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,788.60 : 216,369.11 = 85,169.21 : x
  2. Step 2: Convert to fraction form
    156,788.60/216,369.11 = 85,169.21/x
  3. Step 3: Cross multiply
    156,788.60x = 216,369.11 × 85,169.21
  4. Step 4: Simplify right side
    156,788.60x = 18,427,986,167.10
  5. Step 5: Solve for x
    x = 18,427,986,167.10/156,788.60
  6. Step 6: Final answer
    x = 117,533.97

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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.