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Finding the Fourth Proportional to 155,610.72, 214,739.92 and 87,627.44

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Solution

The fourth proportional to 155,610.72, 214,739.92 and 87,627.44 is: 120,924.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,610.72 : 214,739.92 = 87,627.44 : x
  2. Step 2: Convert to fraction form
    155,610.72/214,739.92 = 87,627.44/x
  3. Step 3: Cross multiply
    155,610.72x = 214,739.92 × 87,627.44
  4. Step 4: Simplify right side
    155,610.72x = 18,817,109,455.40
  5. Step 5: Solve for x
    x = 18,817,109,455.40/155,610.72
  6. Step 6: Final answer
    x = 120,924.25

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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.