Home / 147,949.60-221,815.04-81,464.80

Finding the Fourth Proportional to 147,949.60, 221,815.04 and 81,464.80

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Solution

The fourth proportional to 147,949.60, 221,815.04 and 81,464.80 is: 122,136.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,949.60 : 221,815.04 = 81,464.80 : x
  2. Step 2: Convert to fraction form
    147,949.60/221,815.04 = 81,464.80/x
  3. Step 3: Cross multiply
    147,949.60x = 221,815.04 × 81,464.80
  4. Step 4: Simplify right side
    147,949.60x = 18,070,117,870.59
  5. Step 5: Solve for x
    x = 18,070,117,870.59/147,949.60
  6. Step 6: Final answer
    x = 122,136.98

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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.