Home / 211,511.07-291,844.89-120,895.76

Finding the Fourth Proportional to 211,511.07, 291,844.89 and 120,895.76

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Solution

The fourth proportional to 211,511.07, 291,844.89 and 120,895.76 is: 166,813.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,511.07 : 291,844.89 = 120,895.76 : x
  2. Step 2: Convert to fraction form
    211,511.07/291,844.89 = 120,895.76/x
  3. Step 3: Cross multiply
    211,511.07x = 291,844.89 × 120,895.76
  4. Step 4: Simplify right side
    211,511.07x = 35,282,810,508.28
  5. Step 5: Solve for x
    x = 35,282,810,508.28/211,511.07
  6. Step 6: Final answer
    x = 166,813.07

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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.