Home / 154,168.94-212,754.60-90,507.80

Finding the Fourth Proportional to 154,168.94, 212,754.60 and 90,507.80

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Solution

The fourth proportional to 154,168.94, 212,754.60 and 90,507.80 is: 124,901.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,168.94 : 212,754.60 = 90,507.80 : x
  2. Step 2: Convert to fraction form
    154,168.94/212,754.60 = 90,507.80/x
  3. Step 3: Cross multiply
    154,168.94x = 212,754.60 × 90,507.80
  4. Step 4: Simplify right side
    154,168.94x = 19,255,950,785.88
  5. Step 5: Solve for x
    x = 19,255,950,785.88/154,168.94
  6. Step 6: Final answer
    x = 124,901.62

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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.