Home / 108,415.20-149,607.60-60,668.64

Finding the Fourth Proportional to 108,415.20, 149,607.60 and 60,668.64

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Solution

The fourth proportional to 108,415.20, 149,607.60 and 60,668.64 is: 83,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,415.20 : 149,607.60 = 60,668.64 : x
  2. Step 2: Convert to fraction form
    108,415.20/149,607.60 = 60,668.64/x
  3. Step 3: Cross multiply
    108,415.20x = 149,607.60 × 60,668.64
  4. Step 4: Simplify right side
    108,415.20x = 9,076,489,625.66
  5. Step 5: Solve for x
    x = 9,076,489,625.66/108,415.20
  6. Step 6: Final answer
    x = 83,719.71

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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.