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Finding the Fourth Proportional to 168,307.42, 252,260.31 and 78,228.42

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Solution

The fourth proportional to 168,307.42, 252,260.31 and 78,228.42 is: 117,249.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,307.42 : 252,260.31 = 78,228.42 : x
  2. Step 2: Convert to fraction form
    168,307.42/252,260.31 = 78,228.42/x
  3. Step 3: Cross multiply
    168,307.42x = 252,260.31 × 78,228.42
  4. Step 4: Simplify right side
    168,307.42x = 19,733,925,781.61
  5. Step 5: Solve for x
    x = 19,733,925,781.61/168,307.42
  6. Step 6: Final answer
    x = 117,249.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.