Home / 139,012.41-208,518.60-120,236.65

Finding the Fourth Proportional to 139,012.41, 208,518.60 and 120,236.65

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Solution

The fourth proportional to 139,012.41, 208,518.60 and 120,236.65 is: 180,354.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,012.41 : 208,518.60 = 120,236.65 : x
  2. Step 2: Convert to fraction form
    139,012.41/208,518.60 = 120,236.65/x
  3. Step 3: Cross multiply
    139,012.41x = 208,518.60 × 120,236.65
  4. Step 4: Simplify right side
    139,012.41x = 25,071,577,856.28
  5. Step 5: Solve for x
    x = 25,071,577,856.28/139,012.41
  6. Step 6: Final answer
    x = 180,354.96

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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.