Home / 268,742.99-403,172.80-81,749.63

Finding the Fourth Proportional to 268,742.99, 403,172.80 and 81,749.63

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Solution

The fourth proportional to 268,742.99, 403,172.80 and 81,749.63 is: 122,642.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,742.99 : 403,172.80 = 81,749.63 : x
  2. Step 2: Convert to fraction form
    268,742.99/403,172.80 = 81,749.63/x
  3. Step 3: Cross multiply
    268,742.99x = 403,172.80 × 81,749.63
  4. Step 4: Simplify right side
    268,742.99x = 32,959,225,005.83
  5. Step 5: Solve for x
    x = 32,959,225,005.83/268,742.99
  6. Step 6: Final answer
    x = 122,642.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.