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Finding the Fourth Proportional to 120,477.20, 180,888.60 and 94,211.60

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Solution

The fourth proportional to 120,477.20, 180,888.60 and 94,211.60 is: 141,452.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,477.20 : 180,888.60 = 94,211.60 : x
  2. Step 2: Convert to fraction form
    120,477.20/180,888.60 = 94,211.60/x
  3. Step 3: Cross multiply
    120,477.20x = 180,888.60 × 94,211.60
  4. Step 4: Simplify right side
    120,477.20x = 17,041,804,427.76
  5. Step 5: Solve for x
    x = 17,041,804,427.76/120,477.20
  6. Step 6: Final answer
    x = 141,452.53

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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.