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Finding the Fourth Proportional to 154,029.20, 230,928.60 and 83,987.60

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Solution

The fourth proportional to 154,029.20, 230,928.60 and 83,987.60 is: 125,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,029.20 : 230,928.60 = 83,987.60 : x
  2. Step 2: Convert to fraction form
    154,029.20/230,928.60 = 83,987.60/x
  3. Step 3: Cross multiply
    154,029.20x = 230,928.60 × 83,987.60
  4. Step 4: Simplify right side
    154,029.20x = 19,395,138,885.36
  5. Step 5: Solve for x
    x = 19,395,138,885.36/154,029.20
  6. Step 6: Final answer
    x = 125,918.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.