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Finding the Fourth Proportional to 105,759.60, 145,908 and 67,520.58

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Solution

The fourth proportional to 105,759.60, 145,908 and 67,520.58 is: 93,152.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,759.60 : 145,908 = 67,520.58 : x
  2. Step 2: Convert to fraction form
    105,759.60/145,908 = 67,520.58/x
  3. Step 3: Cross multiply
    105,759.60x = 145,908 × 67,520.58
  4. Step 4: Simplify right side
    105,759.60x = 9,851,792,786.64
  5. Step 5: Solve for x
    x = 9,851,792,786.64/105,759.60
  6. Step 6: Final answer
    x = 93,152.70

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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.