Home / 120,845.80-180,910.30-89,818.60

Finding the Fourth Proportional to 120,845.80, 180,910.30 and 89,818.60

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Solution

The fourth proportional to 120,845.80, 180,910.30 and 89,818.60 is: 134,461.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,845.80 : 180,910.30 = 89,818.60 : x
  2. Step 2: Convert to fraction form
    120,845.80/180,910.30 = 89,818.60/x
  3. Step 3: Cross multiply
    120,845.80x = 180,910.30 × 89,818.60
  4. Step 4: Simplify right side
    120,845.80x = 16,249,109,871.58
  5. Step 5: Solve for x
    x = 16,249,109,871.58/120,845.80
  6. Step 6: Final answer
    x = 134,461.52

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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.