Home / 151,321.76-208,761.36-90,055.70

Finding the Fourth Proportional to 151,321.76, 208,761.36 and 90,055.70

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Solution

The fourth proportional to 151,321.76, 208,761.36 and 90,055.70 is: 124,239.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,321.76 : 208,761.36 = 90,055.70 : x
  2. Step 2: Convert to fraction form
    151,321.76/208,761.36 = 90,055.70/x
  3. Step 3: Cross multiply
    151,321.76x = 208,761.36 × 90,055.70
  4. Step 4: Simplify right side
    151,321.76x = 18,800,150,407.75
  5. Step 5: Solve for x
    x = 18,800,150,407.75/151,321.76
  6. Step 6: Final answer
    x = 124,239.57

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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.