Home / 103,403.42-155,056.68-43,419.09

Finding the Fourth Proportional to 103,403.42, 155,056.68 and 43,419.09

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Solution

The fourth proportional to 103,403.42, 155,056.68 and 43,419.09 is: 65,108.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,403.42 : 155,056.68 = 43,419.09 : x
  2. Step 2: Convert to fraction form
    103,403.42/155,056.68 = 43,419.09/x
  3. Step 3: Cross multiply
    103,403.42x = 155,056.68 × 43,419.09
  4. Step 4: Simplify right side
    103,403.42x = 6,732,419,775.41
  5. Step 5: Solve for x
    x = 6,732,419,775.41/103,403.42
  6. Step 6: Final answer
    x = 65,108.29

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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.