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Finding the Fourth Proportional to 168,612.69, 253,043.76 and 79,866.39

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Solution

The fourth proportional to 168,612.69, 253,043.76 and 79,866.39 is: 119,858.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,612.69 : 253,043.76 = 79,866.39 : x
  2. Step 2: Convert to fraction form
    168,612.69/253,043.76 = 79,866.39/x
  3. Step 3: Cross multiply
    168,612.69x = 253,043.76 × 79,866.39
  4. Step 4: Simplify right side
    168,612.69x = 20,209,692,472.31
  5. Step 5: Solve for x
    x = 20,209,692,472.31/168,612.69
  6. Step 6: Final answer
    x = 119,858.67

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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.