Home / 109,563.20-164,409.60-72,231.20

Finding the Fourth Proportional to 109,563.20, 164,409.60 and 72,231.20

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Solution

The fourth proportional to 109,563.20, 164,409.60 and 72,231.20 is: 108,389.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,563.20 : 164,409.60 = 72,231.20 : x
  2. Step 2: Convert to fraction form
    109,563.20/164,409.60 = 72,231.20/x
  3. Step 3: Cross multiply
    109,563.20x = 164,409.60 × 72,231.20
  4. Step 4: Simplify right side
    109,563.20x = 11,875,502,699.52
  5. Step 5: Solve for x
    x = 11,875,502,699.52/109,563.20
  6. Step 6: Final answer
    x = 108,389.52

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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.