Home / 193,818.02-290,431-81,436.80

Finding the Fourth Proportional to 193,818.02, 290,431 and 81,436.80

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Solution

The fourth proportional to 193,818.02, 290,431 and 81,436.80 is: 122,030.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,818.02 : 290,431 = 81,436.80 : x
  2. Step 2: Convert to fraction form
    193,818.02/290,431 = 81,436.80/x
  3. Step 3: Cross multiply
    193,818.02x = 290,431 × 81,436.80
  4. Step 4: Simplify right side
    193,818.02x = 23,651,771,260.80
  5. Step 5: Solve for x
    x = 23,651,771,260.80/193,818.02
  6. Step 6: Final answer
    x = 122,030.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.