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Finding the Fourth Proportional to 104,247.84, 143,858.48 and 61,781.20

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Solution

The fourth proportional to 104,247.84, 143,858.48 and 61,781.20 is: 85,255.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,247.84 : 143,858.48 = 61,781.20 : x
  2. Step 2: Convert to fraction form
    104,247.84/143,858.48 = 61,781.20/x
  3. Step 3: Cross multiply
    104,247.84x = 143,858.48 × 61,781.20
  4. Step 4: Simplify right side
    104,247.84x = 8,887,749,524.58
  5. Step 5: Solve for x
    x = 8,887,749,524.58/104,247.84
  6. Step 6: Final answer
    x = 85,255.96

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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.