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Finding the Fourth Proportional to 158,021.46, 218,069.82 and 90,035.46

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Solution

The fourth proportional to 158,021.46, 218,069.82 and 90,035.46 is: 124,249.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,021.46 : 218,069.82 = 90,035.46 : x
  2. Step 2: Convert to fraction form
    158,021.46/218,069.82 = 90,035.46/x
  3. Step 3: Cross multiply
    158,021.46x = 218,069.82 × 90,035.46
  4. Step 4: Simplify right side
    158,021.46x = 19,634,016,555.82
  5. Step 5: Solve for x
    x = 19,634,016,555.82/158,021.46
  6. Step 6: Final answer
    x = 124,249.05

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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.