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Finding the Fourth Proportional to 132,143.67, 182,355.67 and 74,781.92

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Solution

The fourth proportional to 132,143.67, 182,355.67 and 74,781.92 is: 103,197.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,143.67 : 182,355.67 = 74,781.92 : x
  2. Step 2: Convert to fraction form
    132,143.67/182,355.67 = 74,781.92/x
  3. Step 3: Cross multiply
    132,143.67x = 182,355.67 × 74,781.92
  4. Step 4: Simplify right side
    132,143.67x = 13,636,907,102.93
  5. Step 5: Solve for x
    x = 13,636,907,102.93/132,143.67
  6. Step 6: Final answer
    x = 103,197.58

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1.5x scale

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.