Home / 99,639.51-137,540.90-72,993.64

Finding the Fourth Proportional to 99,639.51, 137,540.90 and 72,993.64

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Solution

The fourth proportional to 99,639.51, 137,540.90 and 72,993.64 is: 100,759.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,639.51 : 137,540.90 = 72,993.64 : x
  2. Step 2: Convert to fraction form
    99,639.51/137,540.90 = 72,993.64/x
  3. Step 3: Cross multiply
    99,639.51x = 137,540.90 × 72,993.64
  4. Step 4: Simplify right side
    99,639.51x = 10,039,610,939.88
  5. Step 5: Solve for x
    x = 10,039,610,939.88/99,639.51
  6. Step 6: Final answer
    x = 100,759.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.