Home / 268,686.34-403,014.90-81,683.26

Finding the Fourth Proportional to 268,686.34, 403,014.90 and 81,683.26

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Solution

The fourth proportional to 268,686.34, 403,014.90 and 81,683.26 is: 122,520.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,686.34 : 403,014.90 = 81,683.26 : x
  2. Step 2: Convert to fraction form
    268,686.34/403,014.90 = 81,683.26/x
  3. Step 3: Cross multiply
    268,686.34x = 403,014.90 × 81,683.26
  4. Step 4: Simplify right side
    268,686.34x = 32,919,570,860.57
  5. Step 5: Solve for x
    x = 32,919,570,860.57/268,686.34
  6. Step 6: Final answer
    x = 122,520.45

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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.