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Finding the Fourth Proportional to 107,009.20, 160,513.80 and 54,521.20

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Solution

The fourth proportional to 107,009.20, 160,513.80 and 54,521.20 is: 81,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,009.20 : 160,513.80 = 54,521.20 : x
  2. Step 2: Convert to fraction form
    107,009.20/160,513.80 = 54,521.20/x
  3. Step 3: Cross multiply
    107,009.20x = 160,513.80 × 54,521.20
  4. Step 4: Simplify right side
    107,009.20x = 8,751,404,992.56
  5. Step 5: Solve for x
    x = 8,751,404,992.56/107,009.20
  6. Step 6: Final answer
    x = 81,781.80

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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.