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Finding the Fourth Proportional to 194,552.88, 268,482.97 and 105,128.88

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Solution

The fourth proportional to 194,552.88, 268,482.97 and 105,128.88 is: 145,077.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,552.88 : 268,482.97 = 105,128.88 : x
  2. Step 2: Convert to fraction form
    194,552.88/268,482.97 = 105,128.88/x
  3. Step 3: Cross multiply
    194,552.88x = 268,482.97 × 105,128.88
  4. Step 4: Simplify right side
    194,552.88x = 28,225,313,935.17
  5. Step 5: Solve for x
    x = 28,225,313,935.17/194,552.88
  6. Step 6: Final answer
    x = 145,077.85

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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.