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Finding the Fourth Proportional to 155,782.83, 214,980.04 and 84,162.63

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Solution

The fourth proportional to 155,782.83, 214,980.04 and 84,162.63 is: 116,144.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,782.83 : 214,980.04 = 84,162.63 : x
  2. Step 2: Convert to fraction form
    155,782.83/214,980.04 = 84,162.63/x
  3. Step 3: Cross multiply
    155,782.83x = 214,980.04 × 84,162.63
  4. Step 4: Simplify right side
    155,782.83x = 18,093,285,563.91
  5. Step 5: Solve for x
    x = 18,093,285,563.91/155,782.83
  6. Step 6: Final answer
    x = 116,144.29

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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.