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Finding the Fourth Proportional to 139,006.70, 191,829.44 and 75,344.48

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Solution

The fourth proportional to 139,006.70, 191,829.44 and 75,344.48 is: 103,975.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,006.70 : 191,829.44 = 75,344.48 : x
  2. Step 2: Convert to fraction form
    139,006.70/191,829.44 = 75,344.48/x
  3. Step 3: Cross multiply
    139,006.70x = 191,829.44 × 75,344.48
  4. Step 4: Simplify right side
    139,006.70x = 14,453,288,634.71
  5. Step 5: Solve for x
    x = 14,453,288,634.71/139,006.70
  6. Step 6: Final answer
    x = 103,975.49

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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.