Home / 268,115.04-402,179.85-81,126.54

Finding the Fourth Proportional to 268,115.04, 402,179.85 and 81,126.54

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Solution

The fourth proportional to 268,115.04, 402,179.85 and 81,126.54 is: 121,692.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,115.04 : 402,179.85 = 81,126.54 : x
  2. Step 2: Convert to fraction form
    268,115.04/402,179.85 = 81,126.54/x
  3. Step 3: Cross multiply
    268,115.04x = 402,179.85 × 81,126.54
  4. Step 4: Simplify right side
    268,115.04x = 32,627,459,688.22
  5. Step 5: Solve for x
    x = 32,627,459,688.22/268,115.04
  6. Step 6: Final answer
    x = 121,692.02

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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.