Home / 156,939.11-216,580.25-85,324.07

Finding the Fourth Proportional to 156,939.11, 216,580.25 and 85,324.07

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Solution

The fourth proportional to 156,939.11, 216,580.25 and 85,324.07 is: 117,749.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,939.11 : 216,580.25 = 85,324.07 : x
  2. Step 2: Convert to fraction form
    156,939.11/216,580.25 = 85,324.07/x
  3. Step 3: Cross multiply
    156,939.11x = 216,580.25 × 85,324.07
  4. Step 4: Simplify right side
    156,939.11x = 18,479,507,985.00
  5. Step 5: Solve for x
    x = 18,479,507,985.00/156,939.11
  6. Step 6: Final answer
    x = 117,749.54

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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.