Home / 147,405.60-221,141.92-53,911.36

Finding the Fourth Proportional to 147,405.60, 221,141.92 and 53,911.36

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Solution

The fourth proportional to 147,405.60, 221,141.92 and 53,911.36 is: 80,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,405.60 : 221,141.92 = 53,911.36 : x
  2. Step 2: Convert to fraction form
    147,405.60/221,141.92 = 53,911.36/x
  3. Step 3: Cross multiply
    147,405.60x = 221,141.92 × 53,911.36
  4. Step 4: Simplify right side
    147,405.60x = 11,922,061,660.21
  5. Step 5: Solve for x
    x = 11,922,061,660.21/147,405.60
  6. Step 6: Final answer
    x = 80,879.30

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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.