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Finding the Fourth Proportional to 199,583.76, 299,374.80 and 81,227.04

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Solution

The fourth proportional to 199,583.76, 299,374.80 and 81,227.04 is: 121,840.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,583.76 : 299,374.80 = 81,227.04 : x
  2. Step 2: Convert to fraction form
    199,583.76/299,374.80 = 81,227.04/x
  3. Step 3: Cross multiply
    199,583.76x = 299,374.80 × 81,227.04
  4. Step 4: Simplify right side
    199,583.76x = 24,317,328,854.59
  5. Step 5: Solve for x
    x = 24,317,328,854.59/199,583.76
  6. Step 6: Final answer
    x = 121,840.22

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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.