Home / 156,639.96-216,164.74-85,020.60

Finding the Fourth Proportional to 156,639.96, 216,164.74 and 85,020.60

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Solution

The fourth proportional to 156,639.96, 216,164.74 and 85,020.60 is: 117,329.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,639.96 : 216,164.74 = 85,020.60 : x
  2. Step 2: Convert to fraction form
    156,639.96/216,164.74 = 85,020.60/x
  3. Step 3: Cross multiply
    156,639.96x = 216,164.74 × 85,020.60
  4. Step 4: Simplify right side
    156,639.96x = 18,378,455,893.64
  5. Step 5: Solve for x
    x = 18,378,455,893.64/156,639.96
  6. Step 6: Final answer
    x = 117,329.29

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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.