Home / 211,145.09-291,269.81-130,546.85

Finding the Fourth Proportional to 211,145.09, 291,269.81 and 130,546.85

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Solution

The fourth proportional to 211,145.09, 291,269.81 and 130,546.85 is: 180,086.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,145.09 : 291,269.81 = 130,546.85 : x
  2. Step 2: Convert to fraction form
    211,145.09/291,269.81 = 130,546.85/x
  3. Step 3: Cross multiply
    211,145.09x = 291,269.81 × 130,546.85
  4. Step 4: Simplify right side
    211,145.09x = 38,024,355,542.86
  5. Step 5: Solve for x
    x = 38,024,355,542.86/211,145.09
  6. Step 6: Final answer
    x = 180,086.38

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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.