Home / 146,564.80-219,847.20-128,485.60

Finding the Fourth Proportional to 146,564.80, 219,847.20 and 128,485.60

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Solution

The fourth proportional to 146,564.80, 219,847.20 and 128,485.60 is: 192,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,564.80 : 219,847.20 = 128,485.60 : x
  2. Step 2: Convert to fraction form
    146,564.80/219,847.20 = 128,485.60/x
  3. Step 3: Cross multiply
    146,564.80x = 219,847.20 × 128,485.60
  4. Step 4: Simplify right side
    146,564.80x = 28,247,199,400.32
  5. Step 5: Solve for x
    x = 28,247,199,400.32/146,564.80
  6. Step 6: Final answer
    x = 192,728.40

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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.