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Finding the Fourth Proportional to 143,253.44, 197,659.68 and 86,669.12

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Solution

The fourth proportional to 143,253.44, 197,659.68 and 86,669.12 is: 119,585.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,253.44 : 197,659.68 = 86,669.12 : x
  2. Step 2: Convert to fraction form
    143,253.44/197,659.68 = 86,669.12/x
  3. Step 3: Cross multiply
    143,253.44x = 197,659.68 × 86,669.12
  4. Step 4: Simplify right side
    143,253.44x = 17,130,990,525.08
  5. Step 5: Solve for x
    x = 17,130,990,525.08/143,253.44
  6. Step 6: Final answer
    x = 119,585.19

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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.