Home / 158,145.60-218,231.64-86,511.36

Finding the Fourth Proportional to 158,145.60, 218,231.64 and 86,511.36

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Solution

The fourth proportional to 158,145.60, 218,231.64 and 86,511.36 is: 119,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,145.60 : 218,231.64 = 86,511.36 : x
  2. Step 2: Convert to fraction form
    158,145.60/218,231.64 = 86,511.36/x
  3. Step 3: Cross multiply
    158,145.60x = 218,231.64 × 86,511.36
  4. Step 4: Simplify right side
    158,145.60x = 18,879,515,971.43
  5. Step 5: Solve for x
    x = 18,879,515,971.43/158,145.60
  6. Step 6: Final answer
    x = 119,380.60

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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.