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Finding the Fourth Proportional to 135,485.01, 186,921.18 and 80,999.34

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Solution

The fourth proportional to 135,485.01, 186,921.18 and 80,999.34 is: 111,750.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,485.01 : 186,921.18 = 80,999.34 : x
  2. Step 2: Convert to fraction form
    135,485.01/186,921.18 = 80,999.34/x
  3. Step 3: Cross multiply
    135,485.01x = 186,921.18 × 80,999.34
  4. Step 4: Simplify right side
    135,485.01x = 15,140,492,212.02
  5. Step 5: Solve for x
    x = 15,140,492,212.02/135,485.01
  6. Step 6: Final answer
    x = 111,750.31

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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.