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Finding the Fourth Proportional to 158,636.56, 218,924.60 and 87,019.60

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Solution

The fourth proportional to 158,636.56, 218,924.60 and 87,019.60 is: 120,090.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,636.56 : 218,924.60 = 87,019.60 : x
  2. Step 2: Convert to fraction form
    158,636.56/218,924.60 = 87,019.60/x
  3. Step 3: Cross multiply
    158,636.56x = 218,924.60 × 87,019.60
  4. Step 4: Simplify right side
    158,636.56x = 19,050,731,122.16
  5. Step 5: Solve for x
    x = 19,050,731,122.16/158,636.56
  6. Step 6: Final answer
    x = 120,090.42

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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.