Home / 153,850.44-212,315.58-90,172.20

Finding the Fourth Proportional to 153,850.44, 212,315.58 and 90,172.20

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Solution

The fourth proportional to 153,850.44, 212,315.58 and 90,172.20 is: 124,438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,850.44 : 212,315.58 = 90,172.20 : x
  2. Step 2: Convert to fraction form
    153,850.44/212,315.58 = 90,172.20/x
  3. Step 3: Cross multiply
    153,850.44x = 212,315.58 × 90,172.20
  4. Step 4: Simplify right side
    153,850.44x = 19,144,962,942.88
  5. Step 5: Solve for x
    x = 19,144,962,942.88/153,850.44
  6. Step 6: Final answer
    x = 124,438.79

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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.