Home / 142,051.22-196,064.24-81,656.90

Finding the Fourth Proportional to 142,051.22, 196,064.24 and 81,656.90

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Solution

The fourth proportional to 142,051.22, 196,064.24 and 81,656.90 is: 112,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,051.22 : 196,064.24 = 81,656.90 : x
  2. Step 2: Convert to fraction form
    142,051.22/196,064.24 = 81,656.90/x
  3. Step 3: Cross multiply
    142,051.22x = 196,064.24 × 81,656.90
  4. Step 4: Simplify right side
    142,051.22x = 16,009,998,039.26
  5. Step 5: Solve for x
    x = 16,009,998,039.26/142,051.22
  6. Step 6: Final answer
    x = 112,705.81

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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.