Home / 171,120.72-236,175.78-99,542.28

Finding the Fourth Proportional to 171,120.72, 236,175.78 and 99,542.28

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Solution

The fourth proportional to 171,120.72, 236,175.78 and 99,542.28 is: 137,385.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,120.72 : 236,175.78 = 99,542.28 : x
  2. Step 2: Convert to fraction form
    171,120.72/236,175.78 = 99,542.28/x
  3. Step 3: Cross multiply
    171,120.72x = 236,175.78 × 99,542.28
  4. Step 4: Simplify right side
    171,120.72x = 23,509,475,621.98
  5. Step 5: Solve for x
    x = 23,509,475,621.98/171,120.72
  6. Step 6: Final answer
    x = 137,385.32

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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.