Home / 129,911.09-179,177.99-89,692.16

Finding the Fourth Proportional to 129,911.09, 179,177.99 and 89,692.16

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Solution

The fourth proportional to 129,911.09, 179,177.99 and 89,692.16 is: 123,706.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,911.09 : 179,177.99 = 89,692.16 : x
  2. Step 2: Convert to fraction form
    129,911.09/179,177.99 = 89,692.16/x
  3. Step 3: Cross multiply
    129,911.09x = 179,177.99 × 89,692.16
  4. Step 4: Simplify right side
    129,911.09x = 16,070,859,603.21
  5. Step 5: Solve for x
    x = 16,070,859,603.21/129,911.09
  6. Step 6: Final answer
    x = 123,706.61

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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.