Home / 189,845.47-261,990.54-103,809.84

Finding the Fourth Proportional to 189,845.47, 261,990.54 and 103,809.84

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Solution

The fourth proportional to 189,845.47, 261,990.54 and 103,809.84 is: 143,259.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,845.47 : 261,990.54 = 103,809.84 : x
  2. Step 2: Convert to fraction form
    189,845.47/261,990.54 = 103,809.84/x
  3. Step 3: Cross multiply
    189,845.47x = 261,990.54 × 103,809.84
  4. Step 4: Simplify right side
    189,845.47x = 27,197,194,728.96
  5. Step 5: Solve for x
    x = 27,197,194,728.96/189,845.47
  6. Step 6: Final answer
    x = 143,259.65

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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.