Home / 147,263.90-203,221.25-86,837.09

Finding the Fourth Proportional to 147,263.90, 203,221.25 and 86,837.09

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Solution

The fourth proportional to 147,263.90, 203,221.25 and 86,837.09 is: 119,833.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,263.90 : 203,221.25 = 86,837.09 : x
  2. Step 2: Convert to fraction form
    147,263.90/203,221.25 = 86,837.09/x
  3. Step 3: Cross multiply
    147,263.90x = 203,221.25 × 86,837.09
  4. Step 4: Simplify right side
    147,263.90x = 17,647,140,525.87
  5. Step 5: Solve for x
    x = 17,647,140,525.87/147,263.90
  6. Step 6: Final answer
    x = 119,833.45

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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.