Home / 243,349.76-335,819.16-135,921.35

Finding the Fourth Proportional to 243,349.76, 335,819.16 and 135,921.35

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Solution

The fourth proportional to 243,349.76, 335,819.16 and 135,921.35 is: 187,569.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,349.76 : 335,819.16 = 135,921.35 : x
  2. Step 2: Convert to fraction form
    243,349.76/335,819.16 = 135,921.35/x
  3. Step 3: Cross multiply
    243,349.76x = 335,819.16 × 135,921.35
  4. Step 4: Simplify right side
    243,349.76x = 45,644,993,583.07
  5. Step 5: Solve for x
    x = 45,644,993,583.07/243,349.76
  6. Step 6: Final answer
    x = 187,569.50

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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.