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Finding the Fourth Proportional to 104,635.66, 144,420.14 and 68,829.20

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Solution

The fourth proportional to 104,635.66, 144,420.14 and 68,829.20 is: 94,999.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,635.66 : 144,420.14 = 68,829.20 : x
  2. Step 2: Convert to fraction form
    104,635.66/144,420.14 = 68,829.20/x
  3. Step 3: Cross multiply
    104,635.66x = 144,420.14 × 68,829.20
  4. Step 4: Simplify right side
    104,635.66x = 9,940,322,355.94
  5. Step 5: Solve for x
    x = 9,940,322,355.94/104,635.66
  6. Step 6: Final answer
    x = 94,999.38

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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.