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Finding the Fourth Proportional to 109,406.80, 163,915.80 and 93,854.80

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Solution

The fourth proportional to 109,406.80, 163,915.80 and 93,854.80 is: 140,615.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,406.80 : 163,915.80 = 93,854.80 : x
  2. Step 2: Convert to fraction form
    109,406.80/163,915.80 = 93,854.80/x
  3. Step 3: Cross multiply
    109,406.80x = 163,915.80 × 93,854.80
  4. Step 4: Simplify right side
    109,406.80x = 15,384,284,625.84
  5. Step 5: Solve for x
    x = 15,384,284,625.84/109,406.80
  6. Step 6: Final answer
    x = 140,615.43

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1.5x scale

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.