Home / 143,537.79-198,080.59-79,005.63

Finding the Fourth Proportional to 143,537.79, 198,080.59 and 79,005.63

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Solution

The fourth proportional to 143,537.79, 198,080.59 and 79,005.63 is: 109,026.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,537.79 : 198,080.59 = 79,005.63 : x
  2. Step 2: Convert to fraction form
    143,537.79/198,080.59 = 79,005.63/x
  3. Step 3: Cross multiply
    143,537.79x = 198,080.59 × 79,005.63
  4. Step 4: Simplify right side
    143,537.79x = 15,649,481,408.69
  5. Step 5: Solve for x
    x = 15,649,481,408.69/143,537.79
  6. Step 6: Final answer
    x = 109,026.91

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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.