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Finding the Fourth Proportional to 139,903.70, 209,778.60 and 95,580.50

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Solution

The fourth proportional to 139,903.70, 209,778.60 and 95,580.50 is: 143,318.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,903.70 : 209,778.60 = 95,580.50 : x
  2. Step 2: Convert to fraction form
    139,903.70/209,778.60 = 95,580.50/x
  3. Step 3: Cross multiply
    139,903.70x = 209,778.60 × 95,580.50
  4. Step 4: Simplify right side
    139,903.70x = 20,050,743,477.30
  5. Step 5: Solve for x
    x = 20,050,743,477.30/139,903.70
  6. Step 6: Final answer
    x = 143,318.18

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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.