Home / 109,021.12-163,530.06-30,133.60

Finding the Fourth Proportional to 109,021.12, 163,530.06 and 30,133.60

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Solution

The fourth proportional to 109,021.12, 163,530.06 and 30,133.60 is: 45,199.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,021.12 : 163,530.06 = 30,133.60 : x
  2. Step 2: Convert to fraction form
    109,021.12/163,530.06 = 30,133.60/x
  3. Step 3: Cross multiply
    109,021.12x = 163,530.06 × 30,133.60
  4. Step 4: Simplify right side
    109,021.12x = 4,927,749,416.02
  5. Step 5: Solve for x
    x = 4,927,749,416.02/109,021.12
  6. Step 6: Final answer
    x = 45,199.95

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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.