Home / 103,982.40-155,998.80-30,110.40

Finding the Fourth Proportional to 103,982.40, 155,998.80 and 30,110.40

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Solution

The fourth proportional to 103,982.40, 155,998.80 and 30,110.40 is: 45,172.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,982.40 : 155,998.80 = 30,110.40 : x
  2. Step 2: Convert to fraction form
    103,982.40/155,998.80 = 30,110.40/x
  3. Step 3: Cross multiply
    103,982.40x = 155,998.80 × 30,110.40
  4. Step 4: Simplify right side
    103,982.40x = 4,697,186,267.52
  5. Step 5: Solve for x
    x = 4,697,186,267.52/103,982.40
  6. Step 6: Final answer
    x = 45,172.90

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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.