Home / 281,115.84-421,730.10-103,623.60

Finding the Fourth Proportional to 281,115.84, 421,730.10 and 103,623.60

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Solution

The fourth proportional to 281,115.84, 421,730.10 and 103,623.60 is: 155,456.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,115.84 : 421,730.10 = 103,623.60 : x
  2. Step 2: Convert to fraction form
    281,115.84/421,730.10 = 103,623.60/x
  3. Step 3: Cross multiply
    281,115.84x = 421,730.10 × 103,623.60
  4. Step 4: Simplify right side
    281,115.84x = 43,701,191,190.36
  5. Step 5: Solve for x
    x = 43,701,191,190.36/281,115.84
  6. Step 6: Final answer
    x = 155,456.17

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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.