Home / 129,756.49-179,063.64-73,167.46

Finding the Fourth Proportional to 129,756.49, 179,063.64 and 73,167.46

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Solution

The fourth proportional to 129,756.49, 179,063.64 and 73,167.46 is: 100,970.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,756.49 : 179,063.64 = 73,167.46 : x
  2. Step 2: Convert to fraction form
    129,756.49/179,063.64 = 73,167.46/x
  3. Step 3: Cross multiply
    129,756.49x = 179,063.64 × 73,167.46
  4. Step 4: Simplify right side
    129,756.49x = 13,101,631,269.50
  5. Step 5: Solve for x
    x = 13,101,631,269.50/129,756.49
  6. Step 6: Final answer
    x = 100,970.91

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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.