Home / 149,845.25-206,782.98-81,862.50

Finding the Fourth Proportional to 149,845.25, 206,782.98 and 81,862.50

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Solution

The fourth proportional to 149,845.25, 206,782.98 and 81,862.50 is: 112,968.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,845.25 : 206,782.98 = 81,862.50 : x
  2. Step 2: Convert to fraction form
    149,845.25/206,782.98 = 81,862.50/x
  3. Step 3: Cross multiply
    149,845.25x = 206,782.98 × 81,862.50
  4. Step 4: Simplify right side
    149,845.25x = 16,927,771,700.25
  5. Step 5: Solve for x
    x = 16,927,771,700.25/149,845.25
  6. Step 6: Final answer
    x = 112,968.36

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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.