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Finding the Fourth Proportional to 135,776.03, 203,664.03 and 42,289.07

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Solution

The fourth proportional to 135,776.03, 203,664.03 and 42,289.07 is: 63,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,776.03 : 203,664.03 = 42,289.07 : x
  2. Step 2: Convert to fraction form
    135,776.03/203,664.03 = 42,289.07/x
  3. Step 3: Cross multiply
    135,776.03x = 203,664.03 × 42,289.07
  4. Step 4: Simplify right side
    135,776.03x = 8,612,762,421.15
  5. Step 5: Solve for x
    x = 8,612,762,421.15/135,776.03
  6. Step 6: Final answer
    x = 63,433.60

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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.