Home / 230,084.12-345,141.95-78,219.39

Finding the Fourth Proportional to 230,084.12, 345,141.95 and 78,219.39

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Solution

The fourth proportional to 230,084.12, 345,141.95 and 78,219.39 is: 117,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,084.12 : 345,141.95 = 78,219.39 : x
  2. Step 2: Convert to fraction form
    230,084.12/345,141.95 = 78,219.39/x
  3. Step 3: Cross multiply
    230,084.12x = 345,141.95 × 78,219.39
  4. Step 4: Simplify right side
    230,084.12x = 26,996,792,401.31
  5. Step 5: Solve for x
    x = 26,996,792,401.31/230,084.12
  6. Step 6: Final answer
    x = 117,334.45

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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.