Home / 109,167.20-163,459.12-69,509.60

Finding the Fourth Proportional to 109,167.20, 163,459.12 and 69,509.60

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Solution

The fourth proportional to 109,167.20, 163,459.12 and 69,509.60 is: 104,078.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,167.20 : 163,459.12 = 69,509.60 : x
  2. Step 2: Convert to fraction form
    109,167.20/163,459.12 = 69,509.60/x
  3. Step 3: Cross multiply
    109,167.20x = 163,459.12 × 69,509.60
  4. Step 4: Simplify right side
    109,167.20x = 11,361,978,047.55
  5. Step 5: Solve for x
    x = 11,361,978,047.55/109,167.20
  6. Step 6: Final answer
    x = 104,078.68

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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.