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Finding the Fourth Proportional to 158,375.30, 218,561.44 and 90,390.91

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Solution

The fourth proportional to 158,375.30, 218,561.44 and 90,390.91 is: 124,741.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,375.30 : 218,561.44 = 90,390.91 : x
  2. Step 2: Convert to fraction form
    158,375.30/218,561.44 = 90,390.91/x
  3. Step 3: Cross multiply
    158,375.30x = 218,561.44 × 90,390.91
  4. Step 4: Simplify right side
    158,375.30x = 19,755,967,452.51
  5. Step 5: Solve for x
    x = 19,755,967,452.51/158,375.30
  6. Step 6: Final answer
    x = 124,741.47

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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.