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Finding the Fourth Proportional to 134,644.76, 185,808.74 and 74,215.52

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Solution

The fourth proportional to 134,644.76, 185,808.74 and 74,215.52 is: 102,416.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,644.76 : 185,808.74 = 74,215.52 : x
  2. Step 2: Convert to fraction form
    134,644.76/185,808.74 = 74,215.52/x
  3. Step 3: Cross multiply
    134,644.76x = 185,808.74 × 74,215.52
  4. Step 4: Simplify right side
    134,644.76x = 13,789,890,959.52
  5. Step 5: Solve for x
    x = 13,789,890,959.52/134,644.76
  6. Step 6: Final answer
    x = 102,416.84

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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.