Home / 156,809.11-216,399.20-85,189.19

Finding the Fourth Proportional to 156,809.11, 216,399.20 and 85,189.19

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Solution

The fourth proportional to 156,809.11, 216,399.20 and 85,189.19 is: 117,562.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,809.11 : 216,399.20 = 85,189.19 : x
  2. Step 2: Convert to fraction form
    156,809.11/216,399.20 = 85,189.19/x
  3. Step 3: Cross multiply
    156,809.11x = 216,399.20 × 85,189.19
  4. Step 4: Simplify right side
    156,809.11x = 18,434,872,992.74
  5. Step 5: Solve for x
    x = 18,434,872,992.74/156,809.11
  6. Step 6: Final answer
    x = 117,562.51

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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.