Home / 211,117.81-291,270.22-120,408.57

Finding the Fourth Proportional to 211,117.81, 291,270.22 and 120,408.57

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Solution

The fourth proportional to 211,117.81, 291,270.22 and 120,408.57 is: 166,122.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,117.81 : 291,270.22 = 120,408.57 : x
  2. Step 2: Convert to fraction form
    211,117.81/291,270.22 = 120,408.57/x
  3. Step 3: Cross multiply
    211,117.81x = 291,270.22 × 120,408.57
  4. Step 4: Simplify right side
    211,117.81x = 35,071,430,673.79
  5. Step 5: Solve for x
    x = 35,071,430,673.79/211,117.81
  6. Step 6: Final answer
    x = 166,122.56

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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.