Home / 154,639.52-213,255.60-100,907.36

Finding the Fourth Proportional to 154,639.52, 213,255.60 and 100,907.36

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Solution

The fourth proportional to 154,639.52, 213,255.60 and 100,907.36 is: 139,156.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,639.52 : 213,255.60 = 100,907.36 : x
  2. Step 2: Convert to fraction form
    154,639.52/213,255.60 = 100,907.36/x
  3. Step 3: Cross multiply
    154,639.52x = 213,255.60 × 100,907.36
  4. Step 4: Simplify right side
    154,639.52x = 21,519,059,601.22
  5. Step 5: Solve for x
    x = 21,519,059,601.22/154,639.52
  6. Step 6: Final answer
    x = 139,156.28

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1.5x scale

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.