Home / 126,054.40-189,081.60-102,434.80

Finding the Fourth Proportional to 126,054.40, 189,081.60 and 102,434.80

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Solution

The fourth proportional to 126,054.40, 189,081.60 and 102,434.80 is: 153,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,054.40 : 189,081.60 = 102,434.80 : x
  2. Step 2: Convert to fraction form
    126,054.40/189,081.60 = 102,434.80/x
  3. Step 3: Cross multiply
    126,054.40x = 189,081.60 × 102,434.80
  4. Step 4: Simplify right side
    126,054.40x = 19,368,535,879.68
  5. Step 5: Solve for x
    x = 19,368,535,879.68/126,054.40
  6. Step 6: Final answer
    x = 153,652.20

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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.