Home / 189,712.26-261,799.74-103,669.35

Finding the Fourth Proportional to 189,712.26, 261,799.74 and 103,669.35

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Solution

The fourth proportional to 189,712.26, 261,799.74 and 103,669.35 is: 143,061.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,712.26 : 261,799.74 = 103,669.35 : x
  2. Step 2: Convert to fraction form
    189,712.26/261,799.74 = 103,669.35/x
  3. Step 3: Cross multiply
    189,712.26x = 261,799.74 × 103,669.35
  4. Step 4: Simplify right side
    189,712.26x = 27,140,608,875.97
  5. Step 5: Solve for x
    x = 27,140,608,875.97/189,712.26
  6. Step 6: Final answer
    x = 143,061.97

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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.