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Finding the Fourth Proportional to 139,014.92, 191,835.45 and 75,351.35

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Solution

The fourth proportional to 139,014.92, 191,835.45 and 75,351.35 is: 103,982.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,014.92 : 191,835.45 = 75,351.35 : x
  2. Step 2: Convert to fraction form
    139,014.92/191,835.45 = 75,351.35/x
  3. Step 3: Cross multiply
    139,014.92x = 191,835.45 × 75,351.35
  4. Step 4: Simplify right side
    139,014.92x = 14,455,060,135.36
  5. Step 5: Solve for x
    x = 14,455,060,135.36/139,014.92
  6. Step 6: Final answer
    x = 103,982.08

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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.