Home / 126,121.60-189,028.80-55,926.40

Finding the Fourth Proportional to 126,121.60, 189,028.80 and 55,926.40

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Solution

The fourth proportional to 126,121.60, 189,028.80 and 55,926.40 is: 83,821.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,121.60 : 189,028.80 = 55,926.40 : x
  2. Step 2: Convert to fraction form
    126,121.60/189,028.80 = 55,926.40/x
  3. Step 3: Cross multiply
    126,121.60x = 189,028.80 × 55,926.40
  4. Step 4: Simplify right side
    126,121.60x = 10,571,700,280.32
  5. Step 5: Solve for x
    x = 10,571,700,280.32/126,121.60
  6. Step 6: Final answer
    x = 83,821.49

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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.