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Finding the Fourth Proportional to 135,731.69, 203,597.53 and 42,237.44

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Solution

The fourth proportional to 135,731.69, 203,597.53 and 42,237.44 is: 63,356.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,731.69 : 203,597.53 = 42,237.44 : x
  2. Step 2: Convert to fraction form
    135,731.69/203,597.53 = 42,237.44/x
  3. Step 3: Cross multiply
    135,731.69x = 203,597.53 × 42,237.44
  4. Step 4: Simplify right side
    135,731.69x = 8,599,438,457.52
  5. Step 5: Solve for x
    x = 8,599,438,457.52/135,731.69
  6. Step 6: Final answer
    x = 63,356.16

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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.