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Finding the Fourth Proportional to 164,556.20, 246,842.40 and 85,824.20

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Solution

The fourth proportional to 164,556.20, 246,842.40 and 85,824.20 is: 128,740.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,556.20 : 246,842.40 = 85,824.20 : x
  2. Step 2: Convert to fraction form
    164,556.20/246,842.40 = 85,824.20/x
  3. Step 3: Cross multiply
    164,556.20x = 246,842.40 × 85,824.20
  4. Step 4: Simplify right side
    164,556.20x = 21,185,051,506.08
  5. Step 5: Solve for x
    x = 21,185,051,506.08/164,556.20
  6. Step 6: Final answer
    x = 128,740.52

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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.