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Finding the Fourth Proportional to 139,907.39, 209,750.20 and 73,334.75

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Solution

The fourth proportional to 139,907.39, 209,750.20 and 73,334.75 is: 109,944.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,907.39 : 209,750.20 = 73,334.75 : x
  2. Step 2: Convert to fraction form
    139,907.39/209,750.20 = 73,334.75/x
  3. Step 3: Cross multiply
    139,907.39x = 209,750.20 × 73,334.75
  4. Step 4: Simplify right side
    139,907.39x = 15,381,978,479.45
  5. Step 5: Solve for x
    x = 15,381,978,479.45/139,907.39
  6. Step 6: Final answer
    x = 109,944.00

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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.