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Finding the Fourth Proportional to 144,749.44, 199,851.74 and 90,384.40

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Solution

The fourth proportional to 144,749.44, 199,851.74 and 90,384.40 is: 124,791.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,749.44 : 199,851.74 = 90,384.40 : x
  2. Step 2: Convert to fraction form
    144,749.44/199,851.74 = 90,384.40/x
  3. Step 3: Cross multiply
    144,749.44x = 199,851.74 × 90,384.40
  4. Step 4: Simplify right side
    144,749.44x = 18,063,479,608.86
  5. Step 5: Solve for x
    x = 18,063,479,608.86/144,749.44
  6. Step 6: Final answer
    x = 124,791.36

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1.5x scale

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.