Home / 142,739.06-196,954.86-81,457.26

Finding the Fourth Proportional to 142,739.06, 196,954.86 and 81,457.26

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Solution

The fourth proportional to 142,739.06, 196,954.86 and 81,457.26 is: 112,396.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,739.06 : 196,954.86 = 81,457.26 : x
  2. Step 2: Convert to fraction form
    142,739.06/196,954.86 = 81,457.26/x
  3. Step 3: Cross multiply
    142,739.06x = 196,954.86 × 81,457.26
  4. Step 4: Simplify right side
    142,739.06x = 16,043,403,239.28
  5. Step 5: Solve for x
    x = 16,043,403,239.28/142,739.06
  6. Step 6: Final answer
    x = 112,396.73

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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.