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Finding the Fourth Proportional to 158,550.21, 218,797.73 and 86,930.06

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Solution

The fourth proportional to 158,550.21, 218,797.73 and 86,930.06 is: 119,962.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,550.21 : 218,797.73 = 86,930.06 : x
  2. Step 2: Convert to fraction form
    158,550.21/218,797.73 = 86,930.06/x
  3. Step 3: Cross multiply
    158,550.21x = 218,797.73 × 86,930.06
  4. Step 4: Simplify right side
    158,550.21x = 19,020,100,069.34
  5. Step 5: Solve for x
    x = 19,020,100,069.34/158,550.21
  6. Step 6: Final answer
    x = 119,962.63

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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.