Home / 154,064.33-212,589.23-90,378.89

Finding the Fourth Proportional to 154,064.33, 212,589.23 and 90,378.89

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Solution

The fourth proportional to 154,064.33, 212,589.23 and 90,378.89 is: 124,711.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,064.33 : 212,589.23 = 90,378.89 : x
  2. Step 2: Convert to fraction form
    154,064.33/212,589.23 = 90,378.89/x
  3. Step 3: Cross multiply
    154,064.33x = 212,589.23 × 90,378.89
  4. Step 4: Simplify right side
    154,064.33x = 19,213,579,390.78
  5. Step 5: Solve for x
    x = 19,213,579,390.78/154,064.33
  6. Step 6: Final answer
    x = 124,711.41

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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.