Home / 100,015.32-149,979.24-47,439.84

Finding the Fourth Proportional to 100,015.32, 149,979.24 and 47,439.84

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Solution

The fourth proportional to 100,015.32, 149,979.24 and 47,439.84 is: 71,139.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,015.32 : 149,979.24 = 47,439.84 : x
  2. Step 2: Convert to fraction form
    100,015.32/149,979.24 = 47,439.84/x
  3. Step 3: Cross multiply
    100,015.32x = 149,979.24 × 47,439.84
  4. Step 4: Simplify right side
    100,015.32x = 7,114,991,148.92
  5. Step 5: Solve for x
    x = 7,114,991,148.92/100,015.32
  6. Step 6: Final answer
    x = 71,139.01

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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.