Home / 209,891,384.88-289,743,001.60-135,588,182.88

Finding the Fourth Proportional to 209,891,384.88, 289,743,001.60 and 135,588,182.88

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Solution

The fourth proportional to 209,891,384.88, 289,743,001.60 and 135,588,182.88 is: 187,171,698.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,891,384.88 : 289,743,001.60 = 135,588,182.88 : x
  2. Step 2: Convert to fraction form
    209,891,384.88/289,743,001.60 = 135,588,182.88/x
  3. Step 3: Cross multiply
    209,891,384.88x = 289,743,001.60 × 135,588,182.88
  4. Step 4: Simplify right side
    209,891,384.88x = 39,285,727,089,140,936
  5. Step 5: Solve for x
    x = 39,285,727,089,140,936/209,891,384.88
  6. Step 6: Final answer
    x = 187,171,698.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.