Home / 136,723.68-205,216.80-66,652.20

Finding the Fourth Proportional to 136,723.68, 205,216.80 and 66,652.20

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Solution

The fourth proportional to 136,723.68, 205,216.80 and 66,652.20 is: 100,042.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,723.68 : 205,216.80 = 66,652.20 : x
  2. Step 2: Convert to fraction form
    136,723.68/205,216.80 = 66,652.20/x
  3. Step 3: Cross multiply
    136,723.68x = 205,216.80 × 66,652.20
  4. Step 4: Simplify right side
    136,723.68x = 13,678,151,196.96
  5. Step 5: Solve for x
    x = 13,678,151,196.96/136,723.68
  6. Step 6: Final answer
    x = 100,042.30

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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.