Home / 198,478.40-273,898.71-107,835.11

Finding the Fourth Proportional to 198,478.40, 273,898.71 and 107,835.11

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Solution

The fourth proportional to 198,478.40, 273,898.71 and 107,835.11 is: 148,811.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,478.40 : 273,898.71 = 107,835.11 : x
  2. Step 2: Convert to fraction form
    198,478.40/273,898.71 = 107,835.11/x
  3. Step 3: Cross multiply
    198,478.40x = 273,898.71 × 107,835.11
  4. Step 4: Simplify right side
    198,478.40x = 29,535,896,152.21
  5. Step 5: Solve for x
    x = 29,535,896,152.21/198,478.40
  6. Step 6: Final answer
    x = 148,811.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.