Home / 129,770.48-179,079.72-73,187.12

Finding the Fourth Proportional to 129,770.48, 179,079.72 and 73,187.12

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Solution

The fourth proportional to 129,770.48, 179,079.72 and 73,187.12 is: 100,996.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,770.48 : 179,079.72 = 73,187.12 : x
  2. Step 2: Convert to fraction form
    129,770.48/179,079.72 = 73,187.12/x
  3. Step 3: Cross multiply
    129,770.48x = 179,079.72 × 73,187.12
  4. Step 4: Simplify right side
    129,770.48x = 13,106,328,957.21
  5. Step 5: Solve for x
    x = 13,106,328,957.21/129,770.48
  6. Step 6: Final answer
    x = 100,996.23

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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.