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Finding the Fourth Proportional to 178,434, 267,754.68 and 79,938

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Solution

The fourth proportional to 178,434, 267,754.68 and 79,938 is: 119,953.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,434 : 267,754.68 = 79,938 : x
  2. Step 2: Convert to fraction form
    178,434/267,754.68 = 79,938/x
  3. Step 3: Cross multiply
    178,434x = 267,754.68 × 79,938
  4. Step 4: Simplify right side
    178,434x = 21,403,773,609.84
  5. Step 5: Solve for x
    x = 21,403,773,609.84/178,434
  6. Step 6: Final answer
    x = 119,953.45

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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.