Home / 189,278.64-261,122.04-124,664.40

Finding the Fourth Proportional to 189,278.64, 261,122.04 and 124,664.40

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Solution

The fourth proportional to 189,278.64, 261,122.04 and 124,664.40 is: 171,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,278.64 : 261,122.04 = 124,664.40 : x
  2. Step 2: Convert to fraction form
    189,278.64/261,122.04 = 124,664.40/x
  3. Step 3: Cross multiply
    189,278.64x = 261,122.04 × 124,664.40
  4. Step 4: Simplify right side
    189,278.64x = 32,552,622,443.38
  5. Step 5: Solve for x
    x = 32,552,622,443.38/189,278.64
  6. Step 6: Final answer
    x = 171,982.55

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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.