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Finding the Fourth Proportional to 158,390.33, 218,578.65 and 94,728.13

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Solution

The fourth proportional to 158,390.33, 218,578.65 and 94,728.13 is: 130,724.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,390.33 : 218,578.65 = 94,728.13 : x
  2. Step 2: Convert to fraction form
    158,390.33/218,578.65 = 94,728.13/x
  3. Step 3: Cross multiply
    158,390.33x = 218,578.65 × 94,728.13
  4. Step 4: Simplify right side
    158,390.33x = 20,705,546,772.42
  5. Step 5: Solve for x
    x = 20,705,546,772.42/158,390.33
  6. Step 6: Final answer
    x = 130,724.82

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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.