Home / 146,828.80-220,243.20-128,749.60

Finding the Fourth Proportional to 146,828.80, 220,243.20 and 128,749.60

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Solution

The fourth proportional to 146,828.80, 220,243.20 and 128,749.60 is: 193,124.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,828.80 : 220,243.20 = 128,749.60 : x
  2. Step 2: Convert to fraction form
    146,828.80/220,243.20 = 128,749.60/x
  3. Step 3: Cross multiply
    146,828.80x = 220,243.20 × 128,749.60
  4. Step 4: Simplify right side
    146,828.80x = 28,356,223,902.72
  5. Step 5: Solve for x
    x = 28,356,223,902.72/146,828.80
  6. Step 6: Final answer
    x = 193,124.40

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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.