Home / 189,647.80-261,721.92-109,075.36

Finding the Fourth Proportional to 189,647.80, 261,721.92 and 109,075.36

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Solution

The fourth proportional to 189,647.80, 261,721.92 and 109,075.36 is: 150,528.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,647.80 : 261,721.92 = 109,075.36 : x
  2. Step 2: Convert to fraction form
    189,647.80/261,721.92 = 109,075.36/x
  3. Step 3: Cross multiply
    189,647.80x = 261,721.92 × 109,075.36
  4. Step 4: Simplify right side
    189,647.80x = 28,547,412,643.89
  5. Step 5: Solve for x
    x = 28,547,412,643.89/189,647.80
  6. Step 6: Final answer
    x = 150,528.57

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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.