Home / 143,994.06-198,712.80-86,634.72

Finding the Fourth Proportional to 143,994.06, 198,712.80 and 86,634.72

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Solution

The fourth proportional to 143,994.06, 198,712.80 and 86,634.72 is: 119,556.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,994.06 : 198,712.80 = 86,634.72 : x
  2. Step 2: Convert to fraction form
    143,994.06/198,712.80 = 86,634.72/x
  3. Step 3: Cross multiply
    143,994.06x = 198,712.80 × 86,634.72
  4. Step 4: Simplify right side
    143,994.06x = 17,215,427,788.42
  5. Step 5: Solve for x
    x = 17,215,427,788.42/143,994.06
  6. Step 6: Final answer
    x = 119,556.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.