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Finding the Fourth Proportional to 144,321.51, 199,034.72 and 90,611.54

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Solution

The fourth proportional to 144,321.51, 199,034.72 and 90,611.54 is: 124,962.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,321.51 : 199,034.72 = 90,611.54 : x
  2. Step 2: Convert to fraction form
    144,321.51/199,034.72 = 90,611.54/x
  3. Step 3: Cross multiply
    144,321.51x = 199,034.72 × 90,611.54
  4. Step 4: Simplify right side
    144,321.51x = 18,034,841,044.44
  5. Step 5: Solve for x
    x = 18,034,841,044.44/144,321.51
  6. Step 6: Final answer
    x = 124,962.95

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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.