Home / 99,606.80-137,632.38-79,628.60

Finding the Fourth Proportional to 99,606.80, 137,632.38 and 79,628.60

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Solution

The fourth proportional to 99,606.80, 137,632.38 and 79,628.60 is: 110,027.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,606.80 : 137,632.38 = 79,628.60 : x
  2. Step 2: Convert to fraction form
    99,606.80/137,632.38 = 79,628.60/x
  3. Step 3: Cross multiply
    99,606.80x = 137,632.38 × 79,628.60
  4. Step 4: Simplify right side
    99,606.80x = 10,959,473,734.07
  5. Step 5: Solve for x
    x = 10,959,473,734.07/99,606.80
  6. Step 6: Final answer
    x = 110,027.36

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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.