Home / 154,062.89-212,587.26-90,377.45

Finding the Fourth Proportional to 154,062.89, 212,587.26 and 90,377.45

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Solution

The fourth proportional to 154,062.89, 212,587.26 and 90,377.45 is: 124,709.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,062.89 : 212,587.26 = 90,377.45 : x
  2. Step 2: Convert to fraction form
    154,062.89/212,587.26 = 90,377.45/x
  3. Step 3: Cross multiply
    154,062.89x = 212,587.26 × 90,377.45
  4. Step 4: Simplify right side
    154,062.89x = 19,213,094,540.87
  5. Step 5: Solve for x
    x = 19,213,094,540.87/154,062.89
  6. Step 6: Final answer
    x = 124,709.42

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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.