Home / 248,687.15-343,188.70-135,509.90

Finding the Fourth Proportional to 248,687.15, 343,188.70 and 135,509.90

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Solution

The fourth proportional to 248,687.15, 343,188.70 and 135,509.90 is: 187,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,687.15 : 343,188.70 = 135,509.90 : x
  2. Step 2: Convert to fraction form
    248,687.15/343,188.70 = 135,509.90/x
  3. Step 3: Cross multiply
    248,687.15x = 343,188.70 × 135,509.90
  4. Step 4: Simplify right side
    248,687.15x = 46,505,464,363.41
  5. Step 5: Solve for x
    x = 46,505,464,363.41/248,687.15
  6. Step 6: Final answer
    x = 187,003.89

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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.