Home / 135,132.32-186,477.40-80,693.64

Finding the Fourth Proportional to 135,132.32, 186,477.40 and 80,693.64

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Solution

The fourth proportional to 135,132.32, 186,477.40 and 80,693.64 is: 111,354.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,132.32 : 186,477.40 = 80,693.64 : x
  2. Step 2: Convert to fraction form
    135,132.32/186,477.40 = 80,693.64/x
  3. Step 3: Cross multiply
    135,132.32x = 186,477.40 × 80,693.64
  4. Step 4: Simplify right side
    135,132.32x = 15,047,539,168.02
  5. Step 5: Solve for x
    x = 15,047,539,168.02/135,132.32
  6. Step 6: Final answer
    x = 111,354.11

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.