Home / 189,197.52-261,130.41-108,680.28

Finding the Fourth Proportional to 189,197.52, 261,130.41 and 108,680.28

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Solution

The fourth proportional to 189,197.52, 261,130.41 and 108,680.28 is: 150,000.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,197.52 : 261,130.41 = 108,680.28 : x
  2. Step 2: Convert to fraction form
    189,197.52/261,130.41 = 108,680.28/x
  3. Step 3: Cross multiply
    189,197.52x = 261,130.41 × 108,680.28
  4. Step 4: Simplify right side
    189,197.52x = 28,379,726,075.31
  5. Step 5: Solve for x
    x = 28,379,726,075.31/189,197.52
  6. Step 6: Final answer
    x = 150,000.52

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1.5x scale

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.