Home / 68,090.12-102,156.98-28,127.88

Finding the Fourth Proportional to 68,090.12, 102,156.98 and 28,127.88

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Solution

The fourth proportional to 68,090.12, 102,156.98 and 28,127.88 is: 42,200.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,090.12 : 102,156.98 = 28,127.88 : x
  2. Step 2: Convert to fraction form
    68,090.12/102,156.98 = 28,127.88/x
  3. Step 3: Cross multiply
    68,090.12x = 102,156.98 × 28,127.88
  4. Step 4: Simplify right side
    68,090.12x = 2,873,459,274.60
  5. Step 5: Solve for x
    x = 2,873,459,274.60/68,090.12
  6. Step 6: Final answer
    x = 42,200.83

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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.