Home / 148,020.40-222,030.60-85,812.40

Finding the Fourth Proportional to 148,020.40, 222,030.60 and 85,812.40

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Solution

The fourth proportional to 148,020.40, 222,030.60 and 85,812.40 is: 128,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,020.40 : 222,030.60 = 85,812.40 : x
  2. Step 2: Convert to fraction form
    148,020.40/222,030.60 = 85,812.40/x
  3. Step 3: Cross multiply
    148,020.40x = 222,030.60 × 85,812.40
  4. Step 4: Simplify right side
    148,020.40x = 19,052,978,659.44
  5. Step 5: Solve for x
    x = 19,052,978,659.44/148,020.40
  6. Step 6: Final answer
    x = 128,718.60

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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.