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Finding the Fourth Proportional to 129,828.30, 194,742.45 and 129,828.30

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Solution

The fourth proportional to 129,828.30, 194,742.45 and 129,828.30 is: 194,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,828.30 : 194,742.45 = 129,828.30 : x
  2. Step 2: Convert to fraction form
    129,828.30/194,742.45 = 129,828.30/x
  3. Step 3: Cross multiply
    129,828.30x = 194,742.45 × 129,828.30
  4. Step 4: Simplify right side
    129,828.30x = 25,283,081,221.34
  5. Step 5: Solve for x
    x = 25,283,081,221.34/129,828.30
  6. Step 6: Final answer
    x = 194,742.45

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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.