Home / 107,929.20-161,893.80-105,855.60

Finding the Fourth Proportional to 107,929.20, 161,893.80 and 105,855.60

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Solution

The fourth proportional to 107,929.20, 161,893.80 and 105,855.60 is: 158,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,929.20 : 161,893.80 = 105,855.60 : x
  2. Step 2: Convert to fraction form
    107,929.20/161,893.80 = 105,855.60/x
  3. Step 3: Cross multiply
    107,929.20x = 161,893.80 × 105,855.60
  4. Step 4: Simplify right side
    107,929.20x = 17,137,365,335.28
  5. Step 5: Solve for x
    x = 17,137,365,335.28/107,929.20
  6. Step 6: Final answer
    x = 158,783.40

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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.