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Finding the Fourth Proportional to 139,368.58, 192,321.46 and 75,706.22

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Solution

The fourth proportional to 139,368.58, 192,321.46 and 75,706.22 is: 104,470.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,368.58 : 192,321.46 = 75,706.22 : x
  2. Step 2: Convert to fraction form
    139,368.58/192,321.46 = 75,706.22/x
  3. Step 3: Cross multiply
    139,368.58x = 192,321.46 × 75,706.22
  4. Step 4: Simplify right side
    139,368.58x = 14,559,930,761.48
  5. Step 5: Solve for x
    x = 14,559,930,761.48/139,368.58
  6. Step 6: Final answer
    x = 104,470.68

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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.