Home / 211,139.52-291,372.58-115,649.64

Finding the Fourth Proportional to 211,139.52, 291,372.58 and 115,649.64

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Solution

The fourth proportional to 211,139.52, 291,372.58 and 115,649.64 is: 159,596.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,139.52 : 291,372.58 = 115,649.64 : x
  2. Step 2: Convert to fraction form
    211,139.52/291,372.58 = 115,649.64/x
  3. Step 3: Cross multiply
    211,139.52x = 291,372.58 × 115,649.64
  4. Step 4: Simplify right side
    211,139.52x = 33,697,133,982.87
  5. Step 5: Solve for x
    x = 33,697,133,982.87/211,139.52
  6. Step 6: Final answer
    x = 159,596.53

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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.