Home / 171,039.81-236,055.45-99,419.85

Finding the Fourth Proportional to 171,039.81, 236,055.45 and 99,419.85

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Solution

The fourth proportional to 171,039.81, 236,055.45 and 99,419.85 is: 137,211.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,039.81 : 236,055.45 = 99,419.85 : x
  2. Step 2: Convert to fraction form
    171,039.81/236,055.45 = 99,419.85/x
  3. Step 3: Cross multiply
    171,039.81x = 236,055.45 × 99,419.85
  4. Step 4: Simplify right side
    171,039.81x = 23,468,597,430.68
  5. Step 5: Solve for x
    x = 23,468,597,430.68/171,039.81
  6. Step 6: Final answer
    x = 137,211.32

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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.