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Finding the Fourth Proportional to 158,649.98, 218,923.02 and 90,653.45

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Solution

The fourth proportional to 158,649.98, 218,923.02 and 90,653.45 is: 125,093.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,649.98 : 218,923.02 = 90,653.45 : x
  2. Step 2: Convert to fraction form
    158,649.98/218,923.02 = 90,653.45/x
  3. Step 3: Cross multiply
    158,649.98x = 218,923.02 × 90,653.45
  4. Step 4: Simplify right side
    158,649.98x = 19,846,125,952.80
  5. Step 5: Solve for x
    x = 19,846,125,952.80/158,649.98
  6. Step 6: Final answer
    x = 125,093.79

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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.