Home / 205,243,653.80-308,039,663.10-84,162,002.60

Finding the Fourth Proportional to 205,243,653.80, 308,039,663.10 and 84,162,002.60

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Solution

The fourth proportional to 205,243,653.80, 308,039,663.10 and 84,162,002.60 is: 126,314,428.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,243,653.80 : 308,039,663.10 = 84,162,002.60 : x
  2. Step 2: Convert to fraction form
    205,243,653.80/308,039,663.10 = 84,162,002.60/x
  3. Step 3: Cross multiply
    205,243,653.80x = 308,039,663.10 × 84,162,002.60
  4. Step 4: Simplify right side
    205,243,653.80x = 25,925,234,926,725,324
  5. Step 5: Solve for x
    x = 25,925,234,926,725,324/205,243,653.80
  6. Step 6: Final answer
    x = 126,314,428.96

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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.