Home / 149,267.50-205,986.20-81,285.28

Finding the Fourth Proportional to 149,267.50, 205,986.20 and 81,285.28

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Solution

The fourth proportional to 149,267.50, 205,986.20 and 81,285.28 is: 112,172.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,267.50 : 205,986.20 = 81,285.28 : x
  2. Step 2: Convert to fraction form
    149,267.50/205,986.20 = 81,285.28/x
  3. Step 3: Cross multiply
    149,267.50x = 205,986.20 × 81,285.28
  4. Step 4: Simplify right side
    149,267.50x = 16,743,645,536.71
  5. Step 5: Solve for x
    x = 16,743,645,536.71/149,267.50
  6. Step 6: Final answer
    x = 112,172.08

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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.