Home / 158,520.09-218,749.51-90,523.73

Finding the Fourth Proportional to 158,520.09, 218,749.51 and 90,523.73

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Solution

The fourth proportional to 158,520.09, 218,749.51 and 90,523.73 is: 124,918.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,520.09 : 218,749.51 = 90,523.73 : x
  2. Step 2: Convert to fraction form
    158,520.09/218,749.51 = 90,523.73/x
  3. Step 3: Cross multiply
    158,520.09x = 218,749.51 × 90,523.73
  4. Step 4: Simplify right side
    158,520.09x = 19,802,021,010.43
  5. Step 5: Solve for x
    x = 19,802,021,010.43/158,520.09
  6. Step 6: Final answer
    x = 124,918.05

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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.