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Finding the Fourth Proportional to 134,550, 185,679 and 74,934

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Solution

The fourth proportional to 134,550, 185,679 and 74,934 is: 103,408.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,550 : 185,679 = 74,934 : x
  2. Step 2: Convert to fraction form
    134,550/185,679 = 74,934/x
  3. Step 3: Cross multiply
    134,550x = 185,679 × 74,934
  4. Step 4: Simplify right side
    134,550x = 13,913,670,186
  5. Step 5: Solve for x
    x = 13,913,670,186/134,550
  6. Step 6: Final answer
    x = 103,408.92

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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.