Home / 129,601.36-178,850.68-72,244.32

Finding the Fourth Proportional to 129,601.36, 178,850.68 and 72,244.32

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Solution

The fourth proportional to 129,601.36, 178,850.68 and 72,244.32 is: 99,697.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,601.36 : 178,850.68 = 72,244.32 : x
  2. Step 2: Convert to fraction form
    129,601.36/178,850.68 = 72,244.32/x
  3. Step 3: Cross multiply
    129,601.36x = 178,850.68 × 72,244.32
  4. Step 4: Simplify right side
    129,601.36x = 12,920,945,758.14
  5. Step 5: Solve for x
    x = 12,920,945,758.14/129,601.36
  6. Step 6: Final answer
    x = 99,697.61

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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.