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Finding the Fourth Proportional to 103,847.30, 143,357.11 and 60,820.82

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Solution

The fourth proportional to 103,847.30, 143,357.11 and 60,820.82 is: 83,960.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,847.30 : 143,357.11 = 60,820.82 : x
  2. Step 2: Convert to fraction form
    103,847.30/143,357.11 = 60,820.82/x
  3. Step 3: Cross multiply
    103,847.30x = 143,357.11 × 60,820.82
  4. Step 4: Simplify right side
    103,847.30x = 8,719,096,114.19
  5. Step 5: Solve for x
    x = 8,719,096,114.19/103,847.30
  6. Step 6: Final answer
    x = 83,960.74

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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.