Home / 108,005.20-161,878.20-55,387.60

Finding the Fourth Proportional to 108,005.20, 161,878.20 and 55,387.60

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Solution

The fourth proportional to 108,005.20, 161,878.20 and 55,387.60 is: 83,014.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,005.20 : 161,878.20 = 55,387.60 : x
  2. Step 2: Convert to fraction form
    108,005.20/161,878.20 = 55,387.60/x
  3. Step 3: Cross multiply
    108,005.20x = 161,878.20 × 55,387.60
  4. Step 4: Simplify right side
    108,005.20x = 8,966,044,990.32
  5. Step 5: Solve for x
    x = 8,966,044,990.32/108,005.20
  6. Step 6: Final answer
    x = 83,014.94

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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.