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Finding the Fourth Proportional to 158,390.58, 218,578.99 and 94,728.38

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Solution

The fourth proportional to 158,390.58, 218,578.99 and 94,728.38 is: 130,725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,390.58 : 218,578.99 = 94,728.38 : x
  2. Step 2: Convert to fraction form
    158,390.58/218,578.99 = 94,728.38/x
  3. Step 3: Cross multiply
    158,390.58x = 218,578.99 × 94,728.38
  4. Step 4: Simplify right side
    158,390.58x = 20,705,633,624.74
  5. Step 5: Solve for x
    x = 20,705,633,624.74/158,390.58
  6. Step 6: Final answer
    x = 130,725.16

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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.