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Finding the Fourth Proportional to 104,390.92, 143,999.22 and 66,622.60

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Solution

The fourth proportional to 104,390.92, 143,999.22 and 66,622.60 is: 91,900.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,390.92 : 143,999.22 = 66,622.60 : x
  2. Step 2: Convert to fraction form
    104,390.92/143,999.22 = 66,622.60/x
  3. Step 3: Cross multiply
    104,390.92x = 143,999.22 × 66,622.60
  4. Step 4: Simplify right side
    104,390.92x = 9,593,602,434.37
  5. Step 5: Solve for x
    x = 9,593,602,434.37/104,390.92
  6. Step 6: Final answer
    x = 91,900.74

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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.