Home / 209,891,359.90-289,742,967.10-135,588,157.82

Finding the Fourth Proportional to 209,891,359.90, 289,742,967.10 and 135,588,157.82

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Solution

The fourth proportional to 209,891,359.90, 289,742,967.10 and 135,588,157.82 is: 187,171,664.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,891,359.90 : 289,742,967.10 = 135,588,157.82 : x
  2. Step 2: Convert to fraction form
    209,891,359.90/289,742,967.10 = 135,588,157.82/x
  3. Step 3: Cross multiply
    209,891,359.90x = 289,742,967.10 × 135,588,157.82
  4. Step 4: Simplify right side
    209,891,359.90x = 39,285,715,150,389,872
  5. Step 5: Solve for x
    x = 39,285,715,150,389,872/209,891,359.90
  6. Step 6: Final answer
    x = 187,171,664.28

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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.