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Finding the Fourth Proportional to 139,417.59, 192,395.90 and 75,755.39

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Solution

The fourth proportional to 139,417.59, 192,395.90 and 75,755.39 is: 104,542.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,417.59 : 192,395.90 = 75,755.39 : x
  2. Step 2: Convert to fraction form
    139,417.59/192,395.90 = 75,755.39/x
  3. Step 3: Cross multiply
    139,417.59x = 192,395.90 × 75,755.39
  4. Step 4: Simplify right side
    139,417.59x = 14,575,025,240.19
  5. Step 5: Solve for x
    x = 14,575,025,240.19/139,417.59
  6. Step 6: Final answer
    x = 104,542.23

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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.