Home / 206,493,999.60-309,740,999.40-91,356,322.80

Finding the Fourth Proportional to 206,493,999.60, 309,740,999.40 and 91,356,322.80

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Solution

The fourth proportional to 206,493,999.60, 309,740,999.40 and 91,356,322.80 is: 137,034,484.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,493,999.60 : 309,740,999.40 = 91,356,322.80 : x
  2. Step 2: Convert to fraction form
    206,493,999.60/309,740,999.40 = 91,356,322.80/x
  3. Step 3: Cross multiply
    206,493,999.60x = 309,740,999.40 × 91,356,322.80
  4. Step 4: Simplify right side
    206,493,999.60x = 28,296,798,725,581,004
  5. Step 5: Solve for x
    x = 28,296,798,725,581,004/206,493,999.60
  6. Step 6: Final answer
    x = 137,034,484.20

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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.