Home / 146,418.80-219,628.20-128,339.60

Finding the Fourth Proportional to 146,418.80, 219,628.20 and 128,339.60

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Solution

The fourth proportional to 146,418.80, 219,628.20 and 128,339.60 is: 192,509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,418.80 : 219,628.20 = 128,339.60 : x
  2. Step 2: Convert to fraction form
    146,418.80/219,628.20 = 128,339.60/x
  3. Step 3: Cross multiply
    146,418.80x = 219,628.20 × 128,339.60
  4. Step 4: Simplify right side
    146,418.80x = 28,186,995,336.72
  5. Step 5: Solve for x
    x = 28,186,995,336.72/146,418.80
  6. Step 6: Final answer
    x = 192,509.40

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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.