Home / 147,940.60-221,801.55-81,455.80

Finding the Fourth Proportional to 147,940.60, 221,801.55 and 81,455.80

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Solution

The fourth proportional to 147,940.60, 221,801.55 and 81,455.80 is: 122,123.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,940.60 : 221,801.55 = 81,455.80 : x
  2. Step 2: Convert to fraction form
    147,940.60/221,801.55 = 81,455.80/x
  3. Step 3: Cross multiply
    147,940.60x = 221,801.55 × 81,455.80
  4. Step 4: Simplify right side
    147,940.60x = 18,067,022,696.49
  5. Step 5: Solve for x
    x = 18,067,022,696.49/147,940.60
  6. Step 6: Final answer
    x = 122,123.49

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1.5x scale

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.