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Finding the Fourth Proportional to 158,390.65, 218,579.09 and 94,728.45

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Solution

The fourth proportional to 158,390.65, 218,579.09 and 94,728.45 is: 130,725.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,390.65 : 218,579.09 = 94,728.45 : x
  2. Step 2: Convert to fraction form
    158,390.65/218,579.09 = 94,728.45/x
  3. Step 3: Cross multiply
    158,390.65x = 218,579.09 × 94,728.45
  4. Step 4: Simplify right side
    158,390.65x = 20,705,656,831.57
  5. Step 5: Solve for x
    x = 20,705,656,831.57/158,390.65
  6. Step 6: Final answer
    x = 130,725.25

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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.