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Finding the Fourth Proportional to 134,778.86, 185,991.86 and 74,349.56

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Solution

The fourth proportional to 134,778.86, 185,991.86 and 74,349.56 is: 102,600.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,778.86 : 185,991.86 = 74,349.56 : x
  2. Step 2: Convert to fraction form
    134,778.86/185,991.86 = 74,349.56/x
  3. Step 3: Cross multiply
    134,778.86x = 185,991.86 × 74,349.56
  4. Step 4: Simplify right side
    134,778.86x = 13,828,411,652.87
  5. Step 5: Solve for x
    x = 13,828,411,652.87/134,778.86
  6. Step 6: Final answer
    x = 102,600.75

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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.