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Finding the Fourth Proportional to 193,293.34, 289,870.48 and 66,899.25

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Solution

The fourth proportional to 193,293.34, 289,870.48 and 66,899.25 is: 100,324.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,293.34 : 289,870.48 = 66,899.25 : x
  2. Step 2: Convert to fraction form
    193,293.34/289,870.48 = 66,899.25/x
  3. Step 3: Cross multiply
    193,293.34x = 289,870.48 × 66,899.25
  4. Step 4: Simplify right side
    193,293.34x = 19,392,117,792.76
  5. Step 5: Solve for x
    x = 19,392,117,792.76/193,293.34
  6. Step 6: Final answer
    x = 100,324.81

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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.