Home / 139,009.09-191,815.37-98,708.15

Finding the Fourth Proportional to 139,009.09, 191,815.37 and 98,708.15

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Solution

The fourth proportional to 139,009.09, 191,815.37 and 98,708.15 is: 136,205.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,009.09 : 191,815.37 = 98,708.15 : x
  2. Step 2: Convert to fraction form
    139,009.09/191,815.37 = 98,708.15/x
  3. Step 3: Cross multiply
    139,009.09x = 191,815.37 × 98,708.15
  4. Step 4: Simplify right side
    139,009.09x = 18,933,739,355.19
  5. Step 5: Solve for x
    x = 18,933,739,355.19/139,009.09
  6. Step 6: Final answer
    x = 136,205.04

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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.