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Finding the Fourth Proportional to 158,528.21, 218,770.71 and 90,554.16

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Solution

The fourth proportional to 158,528.21, 218,770.71 and 90,554.16 is: 124,965.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,528.21 : 218,770.71 = 90,554.16 : x
  2. Step 2: Convert to fraction form
    158,528.21/218,770.71 = 90,554.16/x
  3. Step 3: Cross multiply
    158,528.21x = 218,770.71 × 90,554.16
  4. Step 4: Simplify right side
    158,528.21x = 19,810,597,876.65
  5. Step 5: Solve for x
    x = 19,810,597,876.65/158,528.21
  6. Step 6: Final answer
    x = 124,965.76

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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.