Home / 158,629.31-218,914.58-87,012.35

Finding the Fourth Proportional to 158,629.31, 218,914.58 and 87,012.35

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Solution

The fourth proportional to 158,629.31, 218,914.58 and 87,012.35 is: 120,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,629.31 : 218,914.58 = 87,012.35 : x
  2. Step 2: Convert to fraction form
    158,629.31/218,914.58 = 87,012.35/x
  3. Step 3: Cross multiply
    158,629.31x = 218,914.58 × 87,012.35
  4. Step 4: Simplify right side
    158,629.31x = 19,048,271,620.00
  5. Step 5: Solve for x
    x = 19,048,271,620.00/158,629.31
  6. Step 6: Final answer
    x = 120,080.40

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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.