Home / 129,682.69-179,006.76-75,985.09

Finding the Fourth Proportional to 129,682.69, 179,006.76 and 75,985.09

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Solution

The fourth proportional to 129,682.69, 179,006.76 and 75,985.09 is: 104,885.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,682.69 : 179,006.76 = 75,985.09 : x
  2. Step 2: Convert to fraction form
    129,682.69/179,006.76 = 75,985.09/x
  3. Step 3: Cross multiply
    129,682.69x = 179,006.76 × 75,985.09
  4. Step 4: Simplify right side
    129,682.69x = 13,601,844,769.21
  5. Step 5: Solve for x
    x = 13,601,844,769.21/129,682.69
  6. Step 6: Final answer
    x = 104,885.58

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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.