Home / 211,030.30-291,229.68-120,401.02

Finding the Fourth Proportional to 211,030.30, 291,229.68 and 120,401.02

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Solution

The fourth proportional to 211,030.30, 291,229.68 and 120,401.02 is: 166,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,030.30 : 291,229.68 = 120,401.02 : x
  2. Step 2: Convert to fraction form
    211,030.30/291,229.68 = 120,401.02/x
  3. Step 3: Cross multiply
    211,030.30x = 291,229.68 × 120,401.02
  4. Step 4: Simplify right side
    211,030.30x = 35,064,350,526.27
  5. Step 5: Solve for x
    x = 35,064,350,526.27/211,030.30
  6. Step 6: Final answer
    x = 166,157.90

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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.