Home / 154,828.56-213,708.84-101,121.72

Finding the Fourth Proportional to 154,828.56, 213,708.84 and 101,121.72

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Solution

The fourth proportional to 154,828.56, 213,708.84 and 101,121.72 is: 139,577.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,828.56 : 213,708.84 = 101,121.72 : x
  2. Step 2: Convert to fraction form
    154,828.56/213,708.84 = 101,121.72/x
  3. Step 3: Cross multiply
    154,828.56x = 213,708.84 × 101,121.72
  4. Step 4: Simplify right side
    154,828.56x = 21,610,605,480.00
  5. Step 5: Solve for x
    x = 21,610,605,480.00/154,828.56
  6. Step 6: Final answer
    x = 139,577.64

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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.