Home / 149,043.25-205,682.93-81,975.25

Finding the Fourth Proportional to 149,043.25, 205,682.93 and 81,975.25

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Solution

The fourth proportional to 149,043.25, 205,682.93 and 81,975.25 is: 113,127.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,043.25 : 205,682.93 = 81,975.25 : x
  2. Step 2: Convert to fraction form
    149,043.25/205,682.93 = 81,975.25/x
  3. Step 3: Cross multiply
    149,043.25x = 205,682.93 × 81,975.25
  4. Step 4: Simplify right side
    149,043.25x = 16,860,909,607.48
  5. Step 5: Solve for x
    x = 16,860,909,607.48/149,043.25
  6. Step 6: Final answer
    x = 113,127.63

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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.