Home / 205,632,020.80-308,448,031.20-90,557,329.60

Finding the Fourth Proportional to 205,632,020.80, 308,448,031.20 and 90,557,329.60

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Solution

The fourth proportional to 205,632,020.80, 308,448,031.20 and 90,557,329.60 is: 135,835,994.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,632,020.80 : 308,448,031.20 = 90,557,329.60 : x
  2. Step 2: Convert to fraction form
    205,632,020.80/308,448,031.20 = 90,557,329.60/x
  3. Step 3: Cross multiply
    205,632,020.80x = 308,448,031.20 × 90,557,329.60
  4. Step 4: Simplify right side
    205,632,020.80x = 27,932,230,025,849,480
  5. Step 5: Solve for x
    x = 27,932,230,025,849,480/205,632,020.80
  6. Step 6: Final answer
    x = 135,835,994.40

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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.