Home / 110,454.90-165,518.51-81,127.54

Finding the Fourth Proportional to 110,454.90, 165,518.51 and 81,127.54

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Solution

The fourth proportional to 110,454.90, 165,518.51 and 81,127.54 is: 121,570.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,454.90 : 165,518.51 = 81,127.54 : x
  2. Step 2: Convert to fraction form
    110,454.90/165,518.51 = 81,127.54/x
  3. Step 3: Cross multiply
    110,454.90x = 165,518.51 × 81,127.54
  4. Step 4: Simplify right side
    110,454.90x = 13,428,109,540.77
  5. Step 5: Solve for x
    x = 13,428,109,540.77/110,454.90
  6. Step 6: Final answer
    x = 121,570.97

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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.