Home / 109,669.20-164,212.20-70,011.60

Finding the Fourth Proportional to 109,669.20, 164,212.20 and 70,011.60

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Solution

The fourth proportional to 109,669.20, 164,212.20 and 70,011.60 is: 104,831.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,669.20 : 164,212.20 = 70,011.60 : x
  2. Step 2: Convert to fraction form
    109,669.20/164,212.20 = 70,011.60/x
  3. Step 3: Cross multiply
    109,669.20x = 164,212.20 × 70,011.60
  4. Step 4: Simplify right side
    109,669.20x = 11,496,758,861.52
  5. Step 5: Solve for x
    x = 11,496,758,861.52/109,669.20
  6. Step 6: Final answer
    x = 104,831.25

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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.