Home / 154,401.21-212,904.46-100,586.43

Finding the Fourth Proportional to 154,401.21, 212,904.46 and 100,586.43

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Solution

The fourth proportional to 154,401.21, 212,904.46 and 100,586.43 is: 138,699.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,401.21 : 212,904.46 = 100,586.43 : x
  2. Step 2: Convert to fraction form
    154,401.21/212,904.46 = 100,586.43/x
  3. Step 3: Cross multiply
    154,401.21x = 212,904.46 × 100,586.43
  4. Step 4: Simplify right side
    154,401.21x = 21,415,298,497.96
  5. Step 5: Solve for x
    x = 21,415,298,497.96/154,401.21
  6. Step 6: Final answer
    x = 138,699.04

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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.