Home / 158,373.05-218,558.33-90,388.66

Finding the Fourth Proportional to 158,373.05, 218,558.33 and 90,388.66

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Solution

The fourth proportional to 158,373.05, 218,558.33 and 90,388.66 is: 124,738.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,373.05 : 218,558.33 = 90,388.66 : x
  2. Step 2: Convert to fraction form
    158,373.05/218,558.33 = 90,388.66/x
  3. Step 3: Cross multiply
    158,373.05x = 218,558.33 × 90,388.66
  4. Step 4: Simplify right side
    158,373.05x = 19,755,194,260.11
  5. Step 5: Solve for x
    x = 19,755,194,260.11/158,373.05
  6. Step 6: Final answer
    x = 124,738.36

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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.