Home / 68,132.40-102,186.45-43,127.70

Finding the Fourth Proportional to 68,132.40, 102,186.45 and 43,127.70

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Solution

The fourth proportional to 68,132.40, 102,186.45 and 43,127.70 is: 64,683.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,132.40 : 102,186.45 = 43,127.70 : x
  2. Step 2: Convert to fraction form
    68,132.40/102,186.45 = 43,127.70/x
  3. Step 3: Cross multiply
    68,132.40x = 102,186.45 × 43,127.70
  4. Step 4: Simplify right side
    68,132.40x = 4,407,066,559.67
  5. Step 5: Solve for x
    x = 4,407,066,559.67/68,132.40
  6. Step 6: Final answer
    x = 64,683.86

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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.