Home / 149,016.90-205,645.74-81,035.22

Finding the Fourth Proportional to 149,016.90, 205,645.74 and 81,035.22

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Solution

The fourth proportional to 149,016.90, 205,645.74 and 81,035.22 is: 111,829.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,016.90 : 205,645.74 = 81,035.22 : x
  2. Step 2: Convert to fraction form
    149,016.90/205,645.74 = 81,035.22/x
  3. Step 3: Cross multiply
    149,016.90x = 205,645.74 × 81,035.22
  4. Step 4: Simplify right side
    149,016.90x = 16,664,547,782.96
  5. Step 5: Solve for x
    x = 16,664,547,782.96/149,016.90
  6. Step 6: Final answer
    x = 111,829.92

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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.