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Finding the Fourth Proportional to 129,476.68, 194,208.54 and 40,728.22

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Solution

The fourth proportional to 129,476.68, 194,208.54 and 40,728.22 is: 61,090.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,476.68 : 194,208.54 = 40,728.22 : x
  2. Step 2: Convert to fraction form
    129,476.68/194,208.54 = 40,728.22/x
  3. Step 3: Cross multiply
    129,476.68x = 194,208.54 × 40,728.22
  4. Step 4: Simplify right side
    129,476.68x = 7,909,768,143.00
  5. Step 5: Solve for x
    x = 7,909,768,143.00/129,476.68
  6. Step 6: Final answer
    x = 61,090.29

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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.