Home / 231,731.13-347,598.78-91,489.75

Finding the Fourth Proportional to 231,731.13, 347,598.78 and 91,489.75

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Solution

The fourth proportional to 231,731.13, 347,598.78 and 91,489.75 is: 137,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,731.13 : 347,598.78 = 91,489.75 : x
  2. Step 2: Convert to fraction form
    231,731.13/347,598.78 = 91,489.75/x
  3. Step 3: Cross multiply
    231,731.13x = 347,598.78 × 91,489.75
  4. Step 4: Simplify right side
    231,731.13x = 31,801,725,482.51
  5. Step 5: Solve for x
    x = 31,801,725,482.51/231,731.13
  6. Step 6: Final answer
    x = 137,235.45

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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.