Home / 100,864.10-139,193.50-55,546.30

Finding the Fourth Proportional to 100,864.10, 139,193.50 and 55,546.30

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Solution

The fourth proportional to 100,864.10, 139,193.50 and 55,546.30 is: 76,654.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,864.10 : 139,193.50 = 55,546.30 : x
  2. Step 2: Convert to fraction form
    100,864.10/139,193.50 = 55,546.30/x
  3. Step 3: Cross multiply
    100,864.10x = 139,193.50 × 55,546.30
  4. Step 4: Simplify right side
    100,864.10x = 7,731,683,909.05
  5. Step 5: Solve for x
    x = 7,731,683,909.05/100,864.10
  6. Step 6: Final answer
    x = 76,654.47

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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.