Home / 120,215.20-180,104.10-97,907.80

Finding the Fourth Proportional to 120,215.20, 180,104.10 and 97,907.80

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Solution

The fourth proportional to 120,215.20, 180,104.10 and 97,907.80 is: 146,683.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,215.20 : 180,104.10 = 97,907.80 : x
  2. Step 2: Convert to fraction form
    120,215.20/180,104.10 = 97,907.80/x
  3. Step 3: Cross multiply
    120,215.20x = 180,104.10 × 97,907.80
  4. Step 4: Simplify right side
    120,215.20x = 17,633,596,201.98
  5. Step 5: Solve for x
    x = 17,633,596,201.98/120,215.20
  6. Step 6: Final answer
    x = 146,683.58

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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.