Home / 189,629.57-261,686.09-103,587.53

Finding the Fourth Proportional to 189,629.57, 261,686.09 and 103,587.53

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Solution

The fourth proportional to 189,629.57, 261,686.09 and 103,587.53 is: 142,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,629.57 : 261,686.09 = 103,587.53 : x
  2. Step 2: Convert to fraction form
    189,629.57/261,686.09 = 103,587.53/x
  3. Step 3: Cross multiply
    189,629.57x = 261,686.09 × 103,587.53
  4. Step 4: Simplify right side
    189,629.57x = 27,107,414,649.00
  5. Step 5: Solve for x
    x = 27,107,414,649.00/189,629.57
  6. Step 6: Final answer
    x = 142,949.30

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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.