Home / 156,809.30-216,399.46-85,189.38

Finding the Fourth Proportional to 156,809.30, 216,399.46 and 85,189.38

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Solution

The fourth proportional to 156,809.30, 216,399.46 and 85,189.38 is: 117,562.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,809.30 : 216,399.46 = 85,189.38 : x
  2. Step 2: Convert to fraction form
    156,809.30/216,399.46 = 85,189.38/x
  3. Step 3: Cross multiply
    156,809.30x = 216,399.46 × 85,189.38
  4. Step 4: Simplify right side
    156,809.30x = 18,434,935,690.20
  5. Step 5: Solve for x
    x = 18,434,935,690.20/156,809.30
  6. Step 6: Final answer
    x = 117,562.77

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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.