Home / 98,121.80-135,406.45-55,101.69

Finding the Fourth Proportional to 98,121.80, 135,406.45 and 55,101.69

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Solution

The fourth proportional to 98,121.80, 135,406.45 and 55,101.69 is: 76,039.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,121.80 : 135,406.45 = 55,101.69 : x
  2. Step 2: Convert to fraction form
    98,121.80/135,406.45 = 55,101.69/x
  3. Step 3: Cross multiply
    98,121.80x = 135,406.45 × 55,101.69
  4. Step 4: Simplify right side
    98,121.80x = 7,461,124,231.90
  5. Step 5: Solve for x
    x = 7,461,124,231.90/98,121.80
  6. Step 6: Final answer
    x = 76,039.41

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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.