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Finding the Fourth Proportional to 144,697.59, 199,632.70 and 90,986.69

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Solution

The fourth proportional to 144,697.59, 199,632.70 and 90,986.69 is: 125,530.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,697.59 : 199,632.70 = 90,986.69 : x
  2. Step 2: Convert to fraction form
    144,697.59/199,632.70 = 90,986.69/x
  3. Step 3: Cross multiply
    144,697.59x = 199,632.70 × 90,986.69
  4. Step 4: Simplify right side
    144,697.59x = 18,163,919,201.58
  5. Step 5: Solve for x
    x = 18,163,919,201.58/144,697.59
  6. Step 6: Final answer
    x = 125,530.21

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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.