Home / 149,742.77-206,570.42-89,270.81

Finding the Fourth Proportional to 149,742.77, 206,570.42 and 89,270.81

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Solution

The fourth proportional to 149,742.77, 206,570.42 and 89,270.81 is: 123,149.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,742.77 : 206,570.42 = 89,270.81 : x
  2. Step 2: Convert to fraction form
    149,742.77/206,570.42 = 89,270.81/x
  3. Step 3: Cross multiply
    149,742.77x = 206,570.42 × 89,270.81
  4. Step 4: Simplify right side
    149,742.77x = 18,440,707,682.59
  5. Step 5: Solve for x
    x = 18,440,707,682.59/149,742.77
  6. Step 6: Final answer
    x = 123,149.24

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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.