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Finding the Fourth Proportional to 139,838.70, 209,617.59 and 44,999.18

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Solution

The fourth proportional to 139,838.70, 209,617.59 and 44,999.18 is: 67,453.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,838.70 : 209,617.59 = 44,999.18 : x
  2. Step 2: Convert to fraction form
    139,838.70/209,617.59 = 44,999.18/x
  3. Step 3: Cross multiply
    139,838.70x = 209,617.59 × 44,999.18
  4. Step 4: Simplify right side
    139,838.70x = 9,432,620,187.62
  5. Step 5: Solve for x
    x = 9,432,620,187.62/139,838.70
  6. Step 6: Final answer
    x = 67,453.57

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1.5x scale

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.