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Finding the Fourth Proportional to 128,371.80, 192,590.60 and 53,467.04

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Solution

The fourth proportional to 128,371.80, 192,590.60 and 53,467.04 is: 80,214.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,371.80 : 192,590.60 = 53,467.04 : x
  2. Step 2: Convert to fraction form
    128,371.80/192,590.60 = 53,467.04/x
  3. Step 3: Cross multiply
    128,371.80x = 192,590.60 × 53,467.04
  4. Step 4: Simplify right side
    128,371.80x = 10,297,249,313.82
  5. Step 5: Solve for x
    x = 10,297,249,313.82/128,371.80
  6. Step 6: Final answer
    x = 80,214.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.