Home / 129,845-179,190.76-75,393.10

Finding the Fourth Proportional to 129,845, 179,190.76 and 75,393.10

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Solution

The fourth proportional to 129,845, 179,190.76 and 75,393.10 is: 104,045.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,845 : 179,190.76 = 75,393.10 : x
  2. Step 2: Convert to fraction form
    129,845/179,190.76 = 75,393.10/x
  3. Step 3: Cross multiply
    129,845x = 179,190.76 × 75,393.10
  4. Step 4: Simplify right side
    129,845x = 13,509,746,887.76
  5. Step 5: Solve for x
    x = 13,509,746,887.76/129,845
  6. Step 6: Final answer
    x = 104,045.18

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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.