Home / 105,106.26-145,046.62-67,380.50

Finding the Fourth Proportional to 105,106.26, 145,046.62 and 67,380.50

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Solution

The fourth proportional to 105,106.26, 145,046.62 and 67,380.50 is: 92,985.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,106.26 : 145,046.62 = 67,380.50 : x
  2. Step 2: Convert to fraction form
    105,106.26/145,046.62 = 67,380.50/x
  3. Step 3: Cross multiply
    105,106.26x = 145,046.62 × 67,380.50
  4. Step 4: Simplify right side
    105,106.26x = 9,773,313,778.91
  5. Step 5: Solve for x
    x = 9,773,313,778.91/105,106.26
  6. Step 6: Final answer
    x = 92,985.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.