Home / 154,306.80-212,914.32-90,621.36

Finding the Fourth Proportional to 154,306.80, 212,914.32 and 90,621.36

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Solution

The fourth proportional to 154,306.80, 212,914.32 and 90,621.36 is: 125,040.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,306.80 : 212,914.32 = 90,621.36 : x
  2. Step 2: Convert to fraction form
    154,306.80/212,914.32 = 90,621.36/x
  3. Step 3: Cross multiply
    154,306.80x = 212,914.32 × 90,621.36
  4. Step 4: Simplify right side
    154,306.80x = 19,294,585,241.88
  5. Step 5: Solve for x
    x = 19,294,585,241.88/154,306.80
  6. Step 6: Final answer
    x = 125,040.41

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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.