Home / 149,056.83-205,705.62-85,394.78

Finding the Fourth Proportional to 149,056.83, 205,705.62 and 85,394.78

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Solution

The fourth proportional to 149,056.83, 205,705.62 and 85,394.78 is: 117,848.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,056.83 : 205,705.62 = 85,394.78 : x
  2. Step 2: Convert to fraction form
    149,056.83/205,705.62 = 85,394.78/x
  3. Step 3: Cross multiply
    149,056.83x = 205,705.62 × 85,394.78
  4. Step 4: Simplify right side
    149,056.83x = 17,566,185,136.14
  5. Step 5: Solve for x
    x = 17,566,185,136.14/149,056.83
  6. Step 6: Final answer
    x = 117,848.91

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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.