Home / 268,100.79-402,150.83-68,421.18

Finding the Fourth Proportional to 268,100.79, 402,150.83 and 68,421.18

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Solution

The fourth proportional to 268,100.79, 402,150.83 and 68,421.18 is: 102,631.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,100.79 : 402,150.83 = 68,421.18 : x
  2. Step 2: Convert to fraction form
    268,100.79/402,150.83 = 68,421.18/x
  3. Step 3: Cross multiply
    268,100.79x = 402,150.83 × 68,421.18
  4. Step 4: Simplify right side
    268,100.79x = 27,515,634,938.79
  5. Step 5: Solve for x
    x = 27,515,634,938.79/268,100.79
  6. Step 6: Final answer
    x = 102,631.68

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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.