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Finding the Fourth Proportional to 139,050.29, 191,889.81 and 75,388.11

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Solution

The fourth proportional to 139,050.29, 191,889.81 and 75,388.11 is: 104,035.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,050.29 : 191,889.81 = 75,388.11 : x
  2. Step 2: Convert to fraction form
    139,050.29/191,889.81 = 75,388.11/x
  3. Step 3: Cross multiply
    139,050.29x = 191,889.81 × 75,388.11
  4. Step 4: Simplify right side
    139,050.29x = 14,466,210,104.16
  5. Step 5: Solve for x
    x = 14,466,210,104.16/139,050.29
  6. Step 6: Final answer
    x = 104,035.82

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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.