Home / 120,415.20-180,795.60-67,927.20

Finding the Fourth Proportional to 120,415.20, 180,795.60 and 67,927.20

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Solution

The fourth proportional to 120,415.20, 180,795.60 and 67,927.20 is: 101,988.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,415.20 : 180,795.60 = 67,927.20 : x
  2. Step 2: Convert to fraction form
    120,415.20/180,795.60 = 67,927.20/x
  3. Step 3: Cross multiply
    120,415.20x = 180,795.60 × 67,927.20
  4. Step 4: Simplify right side
    120,415.20x = 12,280,938,880.32
  5. Step 5: Solve for x
    x = 12,280,938,880.32/120,415.20
  6. Step 6: Final answer
    x = 101,988.28

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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.