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Finding the Fourth Proportional to 109,308.40, 163,962.60 and 39,194.80

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Solution

The fourth proportional to 109,308.40, 163,962.60 and 39,194.80 is: 58,792.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,308.40 : 163,962.60 = 39,194.80 : x
  2. Step 2: Convert to fraction form
    109,308.40/163,962.60 = 39,194.80/x
  3. Step 3: Cross multiply
    109,308.40x = 163,962.60 × 39,194.80
  4. Step 4: Simplify right side
    109,308.40x = 6,426,481,314.48
  5. Step 5: Solve for x
    x = 6,426,481,314.48/109,308.40
  6. Step 6: Final answer
    x = 58,792.20

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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.