Home / 139,905.82-193,069.74-76,243.47

Finding the Fourth Proportional to 139,905.82, 193,069.74 and 76,243.47

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Solution

The fourth proportional to 139,905.82, 193,069.74 and 76,243.47 is: 105,215.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,905.82 : 193,069.74 = 76,243.47 : x
  2. Step 2: Convert to fraction form
    139,905.82/193,069.74 = 76,243.47/x
  3. Step 3: Cross multiply
    139,905.82x = 193,069.74 × 76,243.47
  4. Step 4: Simplify right side
    139,905.82x = 14,720,306,929.60
  5. Step 5: Solve for x
    x = 14,720,306,929.60/139,905.82
  6. Step 6: Final answer
    x = 105,215.83

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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.