Home / 146,455.20-219,682.80-128,959.20

Finding the Fourth Proportional to 146,455.20, 219,682.80 and 128,959.20

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Solution

The fourth proportional to 146,455.20, 219,682.80 and 128,959.20 is: 193,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,455.20 : 219,682.80 = 128,959.20 : x
  2. Step 2: Convert to fraction form
    146,455.20/219,682.80 = 128,959.20/x
  3. Step 3: Cross multiply
    146,455.20x = 219,682.80 × 128,959.20
  4. Step 4: Simplify right side
    146,455.20x = 28,330,118,141.76
  5. Step 5: Solve for x
    x = 28,330,118,141.76/146,455.20
  6. Step 6: Final answer
    x = 193,438.80

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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.