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Finding the Fourth Proportional to 109,673.20, 164,218.20 and 70,015.60

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Solution

The fourth proportional to 109,673.20, 164,218.20 and 70,015.60 is: 104,837.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,673.20 : 164,218.20 = 70,015.60 : x
  2. Step 2: Convert to fraction form
    109,673.20/164,218.20 = 70,015.60/x
  3. Step 3: Cross multiply
    109,673.20x = 164,218.20 × 70,015.60
  4. Step 4: Simplify right side
    109,673.20x = 11,497,835,803.92
  5. Step 5: Solve for x
    x = 11,497,835,803.92/109,673.20
  6. Step 6: Final answer
    x = 104,837.24

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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.