Home / 211,401.90-291,737.01-120,769.86

Finding the Fourth Proportional to 211,401.90, 291,737.01 and 120,769.86

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Solution

The fourth proportional to 211,401.90, 291,737.01 and 120,769.86 is: 166,663.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,401.90 : 291,737.01 = 120,769.86 : x
  2. Step 2: Convert to fraction form
    211,401.90/291,737.01 = 120,769.86/x
  3. Step 3: Cross multiply
    211,401.90x = 291,737.01 × 120,769.86
  4. Step 4: Simplify right side
    211,401.90x = 35,233,037,854.52
  5. Step 5: Solve for x
    x = 35,233,037,854.52/211,401.90
  6. Step 6: Final answer
    x = 166,663.77

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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.