Home / 151,621.80-209,235.49-83,645.28

Finding the Fourth Proportional to 151,621.80, 209,235.49 and 83,645.28

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Solution

The fourth proportional to 151,621.80, 209,235.49 and 83,645.28 is: 115,429.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,621.80 : 209,235.49 = 83,645.28 : x
  2. Step 2: Convert to fraction form
    151,621.80/209,235.49 = 83,645.28/x
  3. Step 3: Cross multiply
    151,621.80x = 209,235.49 × 83,645.28
  4. Step 4: Simplify right side
    151,621.80x = 17,501,561,146.99
  5. Step 5: Solve for x
    x = 17,501,561,146.99/151,621.80
  6. Step 6: Final answer
    x = 115,429.06

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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.