Home / 211,516.35-291,907.41-120,885.72

Finding the Fourth Proportional to 211,516.35, 291,907.41 and 120,885.72

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Solution

The fourth proportional to 211,516.35, 291,907.41 and 120,885.72 is: 166,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,516.35 : 291,907.41 = 120,885.72 : x
  2. Step 2: Convert to fraction form
    211,516.35/291,907.41 = 120,885.72/x
  3. Step 3: Cross multiply
    211,516.35x = 291,907.41 × 120,885.72
  4. Step 4: Simplify right side
    211,516.35x = 35,287,437,431.19
  5. Step 5: Solve for x
    x = 35,287,437,431.19/211,516.35
  6. Step 6: Final answer
    x = 166,830.78

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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.