Home / 68,188.90-102,298.82-20,808.22

Finding the Fourth Proportional to 68,188.90, 102,298.82 and 20,808.22

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Solution

The fourth proportional to 68,188.90, 102,298.82 and 20,808.22 is: 31,217.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,188.90 : 102,298.82 = 20,808.22 : x
  2. Step 2: Convert to fraction form
    68,188.90/102,298.82 = 20,808.22/x
  3. Step 3: Cross multiply
    68,188.90x = 102,298.82 × 20,808.22
  4. Step 4: Simplify right side
    68,188.90x = 2,128,655,840.81
  5. Step 5: Solve for x
    x = 2,128,655,840.81/68,188.90
  6. Step 6: Final answer
    x = 31,217.05

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1.5x scale

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.