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Finding the Fourth Proportional to 139,063.04, 191,905.63 and 75,399.74

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Solution

The fourth proportional to 139,063.04, 191,905.63 and 75,399.74 is: 104,050.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,063.04 : 191,905.63 = 75,399.74 : x
  2. Step 2: Convert to fraction form
    139,063.04/191,905.63 = 75,399.74/x
  3. Step 3: Cross multiply
    139,063.04x = 191,905.63 × 75,399.74
  4. Step 4: Simplify right side
    139,063.04x = 14,469,633,458.51
  5. Step 5: Solve for x
    x = 14,469,633,458.51/139,063.04
  6. Step 6: Final answer
    x = 104,050.90

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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.