Home / 133,369.20-199,985.40-39,862.80

Finding the Fourth Proportional to 133,369.20, 199,985.40 and 39,862.80

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Solution

The fourth proportional to 133,369.20, 199,985.40 and 39,862.80 is: 59,773.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,369.20 : 199,985.40 = 39,862.80 : x
  2. Step 2: Convert to fraction form
    133,369.20/199,985.40 = 39,862.80/x
  3. Step 3: Cross multiply
    133,369.20x = 199,985.40 × 39,862.80
  4. Step 4: Simplify right side
    133,369.20x = 7,971,978,003.12
  5. Step 5: Solve for x
    x = 7,971,978,003.12/133,369.20
  6. Step 6: Final answer
    x = 59,773.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.