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Finding the Fourth Proportional to 142,676.64, 196,890.75 and 79,010.64

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Solution

The fourth proportional to 142,676.64, 196,890.75 and 79,010.64 is: 109,033.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,676.64 : 196,890.75 = 79,010.64 : x
  2. Step 2: Convert to fraction form
    142,676.64/196,890.75 = 79,010.64/x
  3. Step 3: Cross multiply
    142,676.64x = 196,890.75 × 79,010.64
  4. Step 4: Simplify right side
    142,676.64x = 15,556,464,167.58
  5. Step 5: Solve for x
    x = 15,556,464,167.58/142,676.64
  6. Step 6: Final answer
    x = 109,033.01

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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.