Home / 154,210.41-212,745.20-103,239.54

Finding the Fourth Proportional to 154,210.41, 212,745.20 and 103,239.54

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Solution

The fourth proportional to 154,210.41, 212,745.20 and 103,239.54 is: 142,426.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,210.41 : 212,745.20 = 103,239.54 : x
  2. Step 2: Convert to fraction form
    154,210.41/212,745.20 = 103,239.54/x
  3. Step 3: Cross multiply
    154,210.41x = 212,745.20 × 103,239.54
  4. Step 4: Simplify right side
    154,210.41x = 21,963,716,069.01
  5. Step 5: Solve for x
    x = 21,963,716,069.01/154,210.41
  6. Step 6: Final answer
    x = 142,426.94

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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.