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Finding the Fourth Proportional to 139,802.40, 192,953.88 and 83,244.96

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Solution

The fourth proportional to 139,802.40, 192,953.88 and 83,244.96 is: 114,893.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,802.40 : 192,953.88 = 83,244.96 : x
  2. Step 2: Convert to fraction form
    139,802.40/192,953.88 = 83,244.96/x
  3. Step 3: Cross multiply
    139,802.40x = 192,953.88 × 83,244.96
  4. Step 4: Simplify right side
    139,802.40x = 16,062,438,022.44
  5. Step 5: Solve for x
    x = 16,062,438,022.44/139,802.40
  6. Step 6: Final answer
    x = 114,893.86

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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.