Home / 163,852.20-245,786.40-85,120.20

Finding the Fourth Proportional to 163,852.20, 245,786.40 and 85,120.20

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Solution

The fourth proportional to 163,852.20, 245,786.40 and 85,120.20 is: 127,684.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,852.20 : 245,786.40 = 85,120.20 : x
  2. Step 2: Convert to fraction form
    163,852.20/245,786.40 = 85,120.20/x
  3. Step 3: Cross multiply
    163,852.20x = 245,786.40 × 85,120.20
  4. Step 4: Simplify right side
    163,852.20x = 20,921,387,525.28
  5. Step 5: Solve for x
    x = 20,921,387,525.28/163,852.20
  6. Step 6: Final answer
    x = 127,684.51

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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.