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Finding the Fourth Proportional to 132,483.80, 182,874.58 and 78,768.56

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Solution

The fourth proportional to 132,483.80, 182,874.58 and 78,768.56 is: 108,728.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,483.80 : 182,874.58 = 78,768.56 : x
  2. Step 2: Convert to fraction form
    132,483.80/182,874.58 = 78,768.56/x
  3. Step 3: Cross multiply
    132,483.80x = 182,874.58 × 78,768.56
  4. Step 4: Simplify right side
    132,483.80x = 14,404,767,327.20
  5. Step 5: Solve for x
    x = 14,404,767,327.20/132,483.80
  6. Step 6: Final answer
    x = 108,728.52

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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.