Home / 120,555.90-180,869.04-53,980.44

Finding the Fourth Proportional to 120,555.90, 180,869.04 and 53,980.44

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Solution

The fourth proportional to 120,555.90, 180,869.04 and 53,980.44 is: 80,986.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,555.90 : 180,869.04 = 53,980.44 : x
  2. Step 2: Convert to fraction form
    120,555.90/180,869.04 = 53,980.44/x
  3. Step 3: Cross multiply
    120,555.90x = 180,869.04 × 53,980.44
  4. Step 4: Simplify right side
    120,555.90x = 9,763,390,361.58
  5. Step 5: Solve for x
    x = 9,763,390,361.58/120,555.90
  6. Step 6: Final answer
    x = 80,986.42

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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.