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Finding the Fourth Proportional to 194,553.88, 268,484.35 and 105,129.88

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Solution

The fourth proportional to 194,553.88, 268,484.35 and 105,129.88 is: 145,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,553.88 : 268,484.35 = 105,129.88 : x
  2. Step 2: Convert to fraction form
    194,553.88/268,484.35 = 105,129.88/x
  3. Step 3: Cross multiply
    194,553.88x = 268,484.35 × 105,129.88
  4. Step 4: Simplify right side
    194,553.88x = 28,225,727,497.38
  5. Step 5: Solve for x
    x = 28,225,727,497.38/194,553.88
  6. Step 6: Final answer
    x = 145,079.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.