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Finding the Fourth Proportional to 134,679.26, 185,848.95 and 74,246.78

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Solution

The fourth proportional to 134,679.26, 185,848.95 and 74,246.78 is: 102,455.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,679.26 : 185,848.95 = 74,246.78 : x
  2. Step 2: Convert to fraction form
    134,679.26/185,848.95 = 74,246.78/x
  3. Step 3: Cross multiply
    134,679.26x = 185,848.95 × 74,246.78
  4. Step 4: Simplify right side
    134,679.26x = 13,798,686,103.88
  5. Step 5: Solve for x
    x = 13,798,686,103.88/134,679.26
  6. Step 6: Final answer
    x = 102,455.91

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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.