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Finding the Fourth Proportional to 151,365.62, 208,873.76 and 90,108.56

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Solution

The fourth proportional to 151,365.62, 208,873.76 and 90,108.56 is: 124,343.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,365.62 : 208,873.76 = 90,108.56 : x
  2. Step 2: Convert to fraction form
    151,365.62/208,873.76 = 90,108.56/x
  3. Step 3: Cross multiply
    151,365.62x = 208,873.76 × 90,108.56
  4. Step 4: Simplify right side
    151,365.62x = 18,821,313,735.39
  5. Step 5: Solve for x
    x = 18,821,313,735.39/151,365.62
  6. Step 6: Final answer
    x = 124,343.39

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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.