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Finding the Fourth Proportional to 270,121.56, 405,130.35 and 125,987.60

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Solution

The fourth proportional to 270,121.56, 405,130.35 and 125,987.60 is: 188,957.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,121.56 : 405,130.35 = 125,987.60 : x
  2. Step 2: Convert to fraction form
    270,121.56/405,130.35 = 125,987.60/x
  3. Step 3: Cross multiply
    270,121.56x = 405,130.35 × 125,987.60
  4. Step 4: Simplify right side
    270,121.56x = 51,041,400,883.77
  5. Step 5: Solve for x
    x = 51,041,400,883.77/270,121.56
  6. Step 6: Final answer
    x = 188,957.15

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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.