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Finding the Fourth Proportional to 110,842.80, 166,264.20 and 66,519.60

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Solution

The fourth proportional to 110,842.80, 166,264.20 and 66,519.60 is: 99,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,842.80 : 166,264.20 = 66,519.60 : x
  2. Step 2: Convert to fraction form
    110,842.80/166,264.20 = 66,519.60/x
  3. Step 3: Cross multiply
    110,842.80x = 166,264.20 × 66,519.60
  4. Step 4: Simplify right side
    110,842.80x = 11,059,828,078.32
  5. Step 5: Solve for x
    x = 11,059,828,078.32/110,842.80
  6. Step 6: Final answer
    x = 99,779.40

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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.