Home / 205,821,127.20-308,731,690.80-103,784,455.20

Finding the Fourth Proportional to 205,821,127.20, 308,731,690.80 and 103,784,455.20

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Solution

The fourth proportional to 205,821,127.20, 308,731,690.80 and 103,784,455.20 is: 155,676,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,821,127.20 : 308,731,690.80 = 103,784,455.20 : x
  2. Step 2: Convert to fraction form
    205,821,127.20/308,731,690.80 = 103,784,455.20/x
  3. Step 3: Cross multiply
    205,821,127.20x = 308,731,690.80 × 103,784,455.20
  4. Step 4: Simplify right side
    205,821,127.20x = 32,041,550,332,652,856
  5. Step 5: Solve for x
    x = 32,041,550,332,652,856/205,821,127.20
  6. Step 6: Final answer
    x = 155,676,682.80

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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.