Home / 103,990.03-155,972.99-29,116.16

Finding the Fourth Proportional to 103,990.03, 155,972.99 and 29,116.16

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Solution

The fourth proportional to 103,990.03, 155,972.99 and 29,116.16 is: 43,670.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,990.03 : 155,972.99 = 29,116.16 : x
  2. Step 2: Convert to fraction form
    103,990.03/155,972.99 = 29,116.16/x
  3. Step 3: Cross multiply
    103,990.03x = 155,972.99 × 29,116.16
  4. Step 4: Simplify right side
    103,990.03x = 4,541,334,410.34
  5. Step 5: Solve for x
    x = 4,541,334,410.34/103,990.03
  6. Step 6: Final answer
    x = 43,670.86

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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.