Home / 128,455.85-192,666.76-58,319.03

Finding the Fourth Proportional to 128,455.85, 192,666.76 and 58,319.03

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Solution

The fourth proportional to 128,455.85, 192,666.76 and 58,319.03 is: 87,470.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,455.85 : 192,666.76 = 58,319.03 : x
  2. Step 2: Convert to fraction form
    128,455.85/192,666.76 = 58,319.03/x
  3. Step 3: Cross multiply
    128,455.85x = 192,666.76 × 58,319.03
  4. Step 4: Simplify right side
    128,455.85x = 11,236,138,556.44
  5. Step 5: Solve for x
    x = 11,236,138,556.44/128,455.85
  6. Step 6: Final answer
    x = 87,470.82

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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.