Home / 154,037.89-212,573.73-90,376.75

Finding the Fourth Proportional to 154,037.89, 212,573.73 and 90,376.75

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Solution

The fourth proportional to 154,037.89, 212,573.73 and 90,376.75 is: 124,720.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,037.89 : 212,573.73 = 90,376.75 : x
  2. Step 2: Convert to fraction form
    154,037.89/212,573.73 = 90,376.75/x
  3. Step 3: Cross multiply
    154,037.89x = 212,573.73 × 90,376.75
  4. Step 4: Simplify right side
    154,037.89x = 19,211,722,852.78
  5. Step 5: Solve for x
    x = 19,211,722,852.78/154,037.89
  6. Step 6: Final answer
    x = 124,720.76

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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.