Home / 156,540.25-216,025.55-89,485.21

Finding the Fourth Proportional to 156,540.25, 216,025.55 and 89,485.21

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Solution

The fourth proportional to 156,540.25, 216,025.55 and 89,485.21 is: 123,489.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,540.25 : 216,025.55 = 89,485.21 : x
  2. Step 2: Convert to fraction form
    156,540.25/216,025.55 = 89,485.21/x
  3. Step 3: Cross multiply
    156,540.25x = 216,025.55 × 89,485.21
  4. Step 4: Simplify right side
    156,540.25x = 19,331,091,707.12
  5. Step 5: Solve for x
    x = 19,331,091,707.12/156,540.25
  6. Step 6: Final answer
    x = 123,489.59

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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.