Home / 168,311,864.80-252,255,220.80-81,864,128.80

Finding the Fourth Proportional to 168,311,864.80, 252,255,220.80 and 81,864,128.80

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Solution

The fourth proportional to 168,311,864.80, 252,255,220.80 and 81,864,128.80 is: 122,692,799.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,311,864.80 : 252,255,220.80 = 81,864,128.80 : x
  2. Step 2: Convert to fraction form
    168,311,864.80/252,255,220.80 = 81,864,128.80/x
  3. Step 3: Cross multiply
    168,311,864.80x = 252,255,220.80 × 81,864,128.80
  4. Step 4: Simplify right side
    168,311,864.80x = 20,650,653,886,043,640
  5. Step 5: Solve for x
    x = 20,650,653,886,043,640/168,311,864.80
  6. Step 6: Final answer
    x = 122,692,799.53

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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.