Home / 139,789.40-192,911.42-76,127.04

Finding the Fourth Proportional to 139,789.40, 192,911.42 and 76,127.04

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Solution

The fourth proportional to 139,789.40, 192,911.42 and 76,127.04 is: 105,056.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,789.40 : 192,911.42 = 76,127.04 : x
  2. Step 2: Convert to fraction form
    139,789.40/192,911.42 = 76,127.04/x
  3. Step 3: Cross multiply
    139,789.40x = 192,911.42 × 76,127.04
  4. Step 4: Simplify right side
    139,789.40x = 14,685,775,577.11
  5. Step 5: Solve for x
    x = 14,685,775,577.11/139,789.40
  6. Step 6: Final answer
    x = 105,056.44

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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.