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Finding the Fourth Proportional to 134,073.76, 185,016.72 and 74,461.60

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Solution

The fourth proportional to 134,073.76, 185,016.72 and 74,461.60 is: 102,754.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,073.76 : 185,016.72 = 74,461.60 : x
  2. Step 2: Convert to fraction form
    134,073.76/185,016.72 = 74,461.60/x
  3. Step 3: Cross multiply
    134,073.76x = 185,016.72 × 74,461.60
  4. Step 4: Simplify right side
    134,073.76x = 13,776,640,997.95
  5. Step 5: Solve for x
    x = 13,776,640,997.95/134,073.76
  6. Step 6: Final answer
    x = 102,754.19

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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.