Home / 103,981.34-155,981.56-29,101.28

Finding the Fourth Proportional to 103,981.34, 155,981.56 and 29,101.28

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Solution

The fourth proportional to 103,981.34, 155,981.56 and 29,101.28 is: 43,654.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,981.34 : 155,981.56 = 29,101.28 : x
  2. Step 2: Convert to fraction form
    103,981.34/155,981.56 = 29,101.28/x
  3. Step 3: Cross multiply
    103,981.34x = 155,981.56 × 29,101.28
  4. Step 4: Simplify right side
    103,981.34x = 4,539,263,052.40
  5. Step 5: Solve for x
    x = 4,539,263,052.40/103,981.34
  6. Step 6: Final answer
    x = 43,654.59

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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.