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Finding the Fourth Proportional to 139,964.40, 209,883.42 and 40,101.74

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Solution

The fourth proportional to 139,964.40, 209,883.42 and 40,101.74 is: 60,134.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,964.40 : 209,883.42 = 40,101.74 : x
  2. Step 2: Convert to fraction form
    139,964.40/209,883.42 = 40,101.74/x
  3. Step 3: Cross multiply
    139,964.40x = 209,883.42 × 40,101.74
  4. Step 4: Simplify right side
    139,964.40x = 8,416,689,289.73
  5. Step 5: Solve for x
    x = 8,416,689,289.73/139,964.40
  6. Step 6: Final answer
    x = 60,134.50

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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.