Home / 243,005.13-335,356.79-135,584.55

Finding the Fourth Proportional to 243,005.13, 335,356.79 and 135,584.55

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Solution

The fourth proportional to 243,005.13, 335,356.79 and 135,584.55 is: 187,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,005.13 : 335,356.79 = 135,584.55 : x
  2. Step 2: Convert to fraction form
    243,005.13/335,356.79 = 135,584.55/x
  3. Step 3: Cross multiply
    243,005.13x = 335,356.79 × 135,584.55
  4. Step 4: Simplify right side
    243,005.13x = 45,469,199,461.59
  5. Step 5: Solve for x
    x = 45,469,199,461.59/243,005.13
  6. Step 6: Final answer
    x = 187,112.10

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1.5x scale

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.