Home / 109,429.20-164,046.60-72,007.20

Finding the Fourth Proportional to 109,429.20, 164,046.60 and 72,007.20

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Solution

The fourth proportional to 109,429.20, 164,046.60 and 72,007.20 is: 107,946.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,429.20 : 164,046.60 = 72,007.20 : x
  2. Step 2: Convert to fraction form
    109,429.20/164,046.60 = 72,007.20/x
  3. Step 3: Cross multiply
    109,429.20x = 164,046.60 × 72,007.20
  4. Step 4: Simplify right side
    109,429.20x = 11,812,536,335.52
  5. Step 5: Solve for x
    x = 11,812,536,335.52/109,429.20
  6. Step 6: Final answer
    x = 107,946.84

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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.