Home / 109,904.99-163,869.83-100,521.60

Finding the Fourth Proportional to 109,904.99, 163,869.83 and 100,521.60

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Solution

The fourth proportional to 109,904.99, 163,869.83 and 100,521.60 is: 149,879.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,904.99 : 163,869.83 = 100,521.60 : x
  2. Step 2: Convert to fraction form
    109,904.99/163,869.83 = 100,521.60/x
  3. Step 3: Cross multiply
    109,904.99x = 163,869.83 × 100,521.60
  4. Step 4: Simplify right side
    109,904.99x = 16,472,457,503.33
  5. Step 5: Solve for x
    x = 16,472,457,503.33/109,904.99
  6. Step 6: Final answer
    x = 149,879.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.