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Finding the Fourth Proportional to 145,783.62, 218,181.66 and 89,659.32

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Solution

The fourth proportional to 145,783.62, 218,181.66 and 89,659.32 is: 134,185.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,783.62 : 218,181.66 = 89,659.32 : x
  2. Step 2: Convert to fraction form
    145,783.62/218,181.66 = 89,659.32/x
  3. Step 3: Cross multiply
    145,783.62x = 218,181.66 × 89,659.32
  4. Step 4: Simplify right side
    145,783.62x = 19,562,019,272.07
  5. Step 5: Solve for x
    x = 19,562,019,272.07/145,783.62
  6. Step 6: Final answer
    x = 134,185.30

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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.