Home / 156,945.86-216,589.56-85,330.70

Finding the Fourth Proportional to 156,945.86, 216,589.56 and 85,330.70

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Solution

The fourth proportional to 156,945.86, 216,589.56 and 85,330.70 is: 117,758.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,945.86 : 216,589.56 = 85,330.70 : x
  2. Step 2: Convert to fraction form
    156,945.86/216,589.56 = 85,330.70/x
  3. Step 3: Cross multiply
    156,945.86x = 216,589.56 × 85,330.70
  4. Step 4: Simplify right side
    156,945.86x = 18,481,738,767.49
  5. Step 5: Solve for x
    x = 18,481,738,767.49/156,945.86
  6. Step 6: Final answer
    x = 117,758.69

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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.