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Finding the Fourth Proportional to 139,619.54, 209,439.84 and 43,544.63

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Solution

The fourth proportional to 139,619.54, 209,439.84 and 43,544.63 is: 65,320.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,619.54 : 209,439.84 = 43,544.63 : x
  2. Step 2: Convert to fraction form
    139,619.54/209,439.84 = 43,544.63/x
  3. Step 3: Cross multiply
    139,619.54x = 209,439.84 × 43,544.63
  4. Step 4: Simplify right side
    139,619.54x = 9,119,980,552.61
  5. Step 5: Solve for x
    x = 9,119,980,552.61/139,619.54
  6. Step 6: Final answer
    x = 65,320.23

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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.