Home / 148,111.20-222,166.80-85,125.60

Finding the Fourth Proportional to 148,111.20, 222,166.80 and 85,125.60

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Solution

The fourth proportional to 148,111.20, 222,166.80 and 85,125.60 is: 127,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,111.20 : 222,166.80 = 85,125.60 : x
  2. Step 2: Convert to fraction form
    148,111.20/222,166.80 = 85,125.60/x
  3. Step 3: Cross multiply
    148,111.20x = 222,166.80 × 85,125.60
  4. Step 4: Simplify right side
    148,111.20x = 18,912,082,150.08
  5. Step 5: Solve for x
    x = 18,912,082,150.08/148,111.20
  6. Step 6: Final answer
    x = 127,688.40

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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.