Home / 154,013.24-212,479.81-100,344.26

Finding the Fourth Proportional to 154,013.24, 212,479.81 and 100,344.26

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Solution

The fourth proportional to 154,013.24, 212,479.81 and 100,344.26 is: 138,436.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,013.24 : 212,479.81 = 100,344.26 : x
  2. Step 2: Convert to fraction form
    154,013.24/212,479.81 = 100,344.26/x
  3. Step 3: Cross multiply
    154,013.24x = 212,479.81 × 100,344.26
  4. Step 4: Simplify right side
    154,013.24x = 21,321,127,735.27
  5. Step 5: Solve for x
    x = 21,321,127,735.27/154,013.24
  6. Step 6: Final answer
    x = 138,436.98

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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.