Home / 109,427.20-164,205.60-79,770.40

Finding the Fourth Proportional to 109,427.20, 164,205.60 and 79,770.40

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Solution

The fourth proportional to 109,427.20, 164,205.60 and 79,770.40 is: 119,702.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,427.20 : 164,205.60 = 79,770.40 : x
  2. Step 2: Convert to fraction form
    109,427.20/164,205.60 = 79,770.40/x
  3. Step 3: Cross multiply
    109,427.20x = 164,205.60 × 79,770.40
  4. Step 4: Simplify right side
    109,427.20x = 13,098,746,394.24
  5. Step 5: Solve for x
    x = 13,098,746,394.24/109,427.20
  6. Step 6: Final answer
    x = 119,702.84

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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.