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Finding the Fourth Proportional to 134,560.96, 185,708.72 and 74,137.80

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Solution

The fourth proportional to 134,560.96, 185,708.72 and 74,137.80 is: 102,318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,560.96 : 185,708.72 = 74,137.80 : x
  2. Step 2: Convert to fraction form
    134,560.96/185,708.72 = 74,137.80/x
  3. Step 3: Cross multiply
    134,560.96x = 185,708.72 × 74,137.80
  4. Step 4: Simplify right side
    134,560.96x = 13,768,035,941.62
  5. Step 5: Solve for x
    x = 13,768,035,941.62/134,560.96
  6. Step 6: Final answer
    x = 102,318.21

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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.