Home / 139,981.08-209,942.10-51,276.12

Finding the Fourth Proportional to 139,981.08, 209,942.10 and 51,276.12

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Solution

The fourth proportional to 139,981.08, 209,942.10 and 51,276.12 is: 76,903.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,981.08 : 209,942.10 = 51,276.12 : x
  2. Step 2: Convert to fraction form
    139,981.08/209,942.10 = 51,276.12/x
  3. Step 3: Cross multiply
    139,981.08x = 209,942.10 × 51,276.12
  4. Step 4: Simplify right side
    139,981.08x = 10,765,016,312.65
  5. Step 5: Solve for x
    x = 10,765,016,312.65/139,981.08
  6. Step 6: Final answer
    x = 76,903.37

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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.