Home / 102,072.89-140,861.28-61,786.98

Finding the Fourth Proportional to 102,072.89, 140,861.28 and 61,786.98

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Solution

The fourth proportional to 102,072.89, 140,861.28 and 61,786.98 is: 85,266.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,072.89 : 140,861.28 = 61,786.98 : x
  2. Step 2: Convert to fraction form
    102,072.89/140,861.28 = 61,786.98/x
  3. Step 3: Cross multiply
    102,072.89x = 140,861.28 × 61,786.98
  4. Step 4: Simplify right side
    102,072.89x = 8,703,393,090.13
  5. Step 5: Solve for x
    x = 8,703,393,090.13/102,072.89
  6. Step 6: Final answer
    x = 85,266.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.