Home / 139,721.04-192,810.12-76,057.47

Finding the Fourth Proportional to 139,721.04, 192,810.12 and 76,057.47

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Solution

The fourth proportional to 139,721.04, 192,810.12 and 76,057.47 is: 104,956.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,721.04 : 192,810.12 = 76,057.47 : x
  2. Step 2: Convert to fraction form
    139,721.04/192,810.12 = 76,057.47/x
  3. Step 3: Cross multiply
    139,721.04x = 192,810.12 × 76,057.47
  4. Step 4: Simplify right side
    139,721.04x = 14,664,649,917.60
  5. Step 5: Solve for x
    x = 14,664,649,917.60/139,721.04
  6. Step 6: Final answer
    x = 104,956.63

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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.