Home / 103,412.40-155,083.68-39,355.34

Finding the Fourth Proportional to 103,412.40, 155,083.68 and 39,355.34

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Solution

The fourth proportional to 103,412.40, 155,083.68 and 39,355.34 is: 59,019.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,412.40 : 155,083.68 = 39,355.34 : x
  2. Step 2: Convert to fraction form
    103,412.40/155,083.68 = 39,355.34/x
  3. Step 3: Cross multiply
    103,412.40x = 155,083.68 × 39,355.34
  4. Step 4: Simplify right side
    103,412.40x = 6,103,370,179.43
  5. Step 5: Solve for x
    x = 6,103,370,179.43/103,412.40
  6. Step 6: Final answer
    x = 59,019.72

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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.