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Finding the Fourth Proportional to 158,365.70, 218,544.72 and 86,748.30

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Solution

The fourth proportional to 158,365.70, 218,544.72 and 86,748.30 is: 119,712.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,365.70 : 218,544.72 = 86,748.30 : x
  2. Step 2: Convert to fraction form
    158,365.70/218,544.72 = 86,748.30/x
  3. Step 3: Cross multiply
    158,365.70x = 218,544.72 × 86,748.30
  4. Step 4: Simplify right side
    158,365.70x = 18,958,382,608.67
  5. Step 5: Solve for x
    x = 18,958,382,608.67/158,365.70
  6. Step 6: Final answer
    x = 119,712.68

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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.