Home / 123,828.55-185,578.80-109,722.40

Finding the Fourth Proportional to 123,828.55, 185,578.80 and 109,722.40

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Solution

The fourth proportional to 123,828.55, 185,578.80 and 109,722.40 is: 164,438.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,828.55 : 185,578.80 = 109,722.40 : x
  2. Step 2: Convert to fraction form
    123,828.55/185,578.80 = 109,722.40/x
  3. Step 3: Cross multiply
    123,828.55x = 185,578.80 × 109,722.40
  4. Step 4: Simplify right side
    123,828.55x = 20,362,151,325.12
  5. Step 5: Solve for x
    x = 20,362,151,325.12/123,828.55
  6. Step 6: Final answer
    x = 164,438.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.