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Finding the Fourth Proportional to 129,870.40, 194,805.60 and 129,870.40

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Solution

The fourth proportional to 129,870.40, 194,805.60 and 129,870.40 is: 194,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,870.40 : 194,805.60 = 129,870.40 : x
  2. Step 2: Convert to fraction form
    129,870.40/194,805.60 = 129,870.40/x
  3. Step 3: Cross multiply
    129,870.40x = 194,805.60 × 129,870.40
  4. Step 4: Simplify right side
    129,870.40x = 25,299,481,194.24
  5. Step 5: Solve for x
    x = 25,299,481,194.24/129,870.40
  6. Step 6: Final answer
    x = 194,805.60

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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.