Home / 129,969.34-179,255.76-84,661.58

Finding the Fourth Proportional to 129,969.34, 179,255.76 and 84,661.58

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Solution

The fourth proportional to 129,969.34, 179,255.76 and 84,661.58 is: 116,766.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,969.34 : 179,255.76 = 84,661.58 : x
  2. Step 2: Convert to fraction form
    129,969.34/179,255.76 = 84,661.58/x
  3. Step 3: Cross multiply
    129,969.34x = 179,255.76 × 84,661.58
  4. Step 4: Simplify right side
    129,969.34x = 15,176,075,865.70
  5. Step 5: Solve for x
    x = 15,176,075,865.70/129,969.34
  6. Step 6: Final answer
    x = 116,766.58

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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.