Home / 149,563,420.85-206,431,958.09-87,703,688.45

Finding the Fourth Proportional to 149,563,420.85, 206,431,958.09 and 87,703,688.45

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Solution

The fourth proportional to 149,563,420.85, 206,431,958.09 and 87,703,688.45 is: 121,051,284.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,563,420.85 : 206,431,958.09 = 87,703,688.45 : x
  2. Step 2: Convert to fraction form
    149,563,420.85/206,431,958.09 = 87,703,688.45/x
  3. Step 3: Cross multiply
    149,563,420.85x = 206,431,958.09 × 87,703,688.45
  4. Step 4: Simplify right side
    149,563,420.85x = 18,104,844,136,978,140
  5. Step 5: Solve for x
    x = 18,104,844,136,978,140/149,563,420.85
  6. Step 6: Final answer
    x = 121,051,284.03

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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.