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Finding the Fourth Proportional to 139,063.19, 191,905.35 and 75,399.62

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Solution

The fourth proportional to 139,063.19, 191,905.35 and 75,399.62 is: 104,050.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,063.19 : 191,905.35 = 75,399.62 : x
  2. Step 2: Convert to fraction form
    139,063.19/191,905.35 = 75,399.62/x
  3. Step 3: Cross multiply
    139,063.19x = 191,905.35 × 75,399.62
  4. Step 4: Simplify right side
    139,063.19x = 14,469,590,465.97
  5. Step 5: Solve for x
    x = 14,469,590,465.97/139,063.19
  6. Step 6: Final answer
    x = 104,050.47

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1.5x scale

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.