Home / 109,022.80-163,534.20-79,279.60

Finding the Fourth Proportional to 109,022.80, 163,534.20 and 79,279.60

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Solution

The fourth proportional to 109,022.80, 163,534.20 and 79,279.60 is: 118,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,022.80 : 163,534.20 = 79,279.60 : x
  2. Step 2: Convert to fraction form
    109,022.80/163,534.20 = 79,279.60/x
  3. Step 3: Cross multiply
    109,022.80x = 163,534.20 × 79,279.60
  4. Step 4: Simplify right side
    109,022.80x = 12,964,925,962.32
  5. Step 5: Solve for x
    x = 12,964,925,962.32/109,022.80
  6. Step 6: Final answer
    x = 118,919.40

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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.