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Finding the Fourth Proportional to 144,728.84, 199,823.27 and 90,363.79

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Solution

The fourth proportional to 144,728.84, 199,823.27 and 90,363.79 is: 124,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,728.84 : 199,823.27 = 90,363.79 : x
  2. Step 2: Convert to fraction form
    144,728.84/199,823.27 = 90,363.79/x
  3. Step 3: Cross multiply
    144,728.84x = 199,823.27 × 90,363.79
  4. Step 4: Simplify right side
    144,728.84x = 18,056,787,189.64
  5. Step 5: Solve for x
    x = 18,056,787,189.64/144,728.84
  6. Step 6: Final answer
    x = 124,762.88

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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.