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Finding the Fourth Proportional to 100,095.75, 138,136.59 and 55,383.75

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Solution

The fourth proportional to 100,095.75, 138,136.59 and 55,383.75 is: 76,432.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,095.75 : 138,136.59 = 55,383.75 : x
  2. Step 2: Convert to fraction form
    100,095.75/138,136.59 = 55,383.75/x
  3. Step 3: Cross multiply
    100,095.75x = 138,136.59 × 55,383.75
  4. Step 4: Simplify right side
    100,095.75x = 7,650,522,366.41
  5. Step 5: Solve for x
    x = 7,650,522,366.41/100,095.75
  6. Step 6: Final answer
    x = 76,432.04

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1.5x scale

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.