Home / 231,821.20-347,731.80-91,507.60

Finding the Fourth Proportional to 231,821.20, 347,731.80 and 91,507.60

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Solution

The fourth proportional to 231,821.20, 347,731.80 and 91,507.60 is: 137,261.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,821.20 : 347,731.80 = 91,507.60 : x
  2. Step 2: Convert to fraction form
    231,821.20/347,731.80 = 91,507.60/x
  3. Step 3: Cross multiply
    231,821.20x = 347,731.80 × 91,507.60
  4. Step 4: Simplify right side
    231,821.20x = 31,820,102,461.68
  5. Step 5: Solve for x
    x = 31,820,102,461.68/231,821.20
  6. Step 6: Final answer
    x = 137,261.40

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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.