Home / 139,989.46-193,181.96-76,328.50

Finding the Fourth Proportional to 139,989.46, 193,181.96 and 76,328.50

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Solution

The fourth proportional to 139,989.46, 193,181.96 and 76,328.50 is: 105,331.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,989.46 : 193,181.96 = 76,328.50 : x
  2. Step 2: Convert to fraction form
    139,989.46/193,181.96 = 76,328.50/x
  3. Step 3: Cross multiply
    139,989.46x = 193,181.96 × 76,328.50
  4. Step 4: Simplify right side
    139,989.46x = 14,745,289,233.86
  5. Step 5: Solve for x
    x = 14,745,289,233.86/139,989.46
  6. Step 6: Final answer
    x = 105,331.42

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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.