Home / 139,929.30-209,892.96-40,089.60

Finding the Fourth Proportional to 139,929.30, 209,892.96 and 40,089.60

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Solution

The fourth proportional to 139,929.30, 209,892.96 and 40,089.60 is: 60,134.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,929.30 : 209,892.96 = 40,089.60 : x
  2. Step 2: Convert to fraction form
    139,929.30/209,892.96 = 40,089.60/x
  3. Step 3: Cross multiply
    139,929.30x = 209,892.96 × 40,089.60
  4. Step 4: Simplify right side
    139,929.30x = 8,414,524,809.22
  5. Step 5: Solve for x
    x = 8,414,524,809.22/139,929.30
  6. Step 6: Final answer
    x = 60,134.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.