Home / 147,638.36-203,740.89-80,570.36

Finding the Fourth Proportional to 147,638.36, 203,740.89 and 80,570.36

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Solution

The fourth proportional to 147,638.36, 203,740.89 and 80,570.36 is: 111,187.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,638.36 : 203,740.89 = 80,570.36 : x
  2. Step 2: Convert to fraction form
    147,638.36/203,740.89 = 80,570.36/x
  3. Step 3: Cross multiply
    147,638.36x = 203,740.89 × 80,570.36
  4. Step 4: Simplify right side
    147,638.36x = 16,415,477,061.23
  5. Step 5: Solve for x
    x = 16,415,477,061.23/147,638.36
  6. Step 6: Final answer
    x = 111,187.07

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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.