Home / 129,349.38-178,467.12-75,647.64

Finding the Fourth Proportional to 129,349.38, 178,467.12 and 75,647.64

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Solution

The fourth proportional to 129,349.38, 178,467.12 and 75,647.64 is: 104,373.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,349.38 : 178,467.12 = 75,647.64 : x
  2. Step 2: Convert to fraction form
    129,349.38/178,467.12 = 75,647.64/x
  3. Step 3: Cross multiply
    129,349.38x = 178,467.12 × 75,647.64
  4. Step 4: Simplify right side
    129,349.38x = 13,500,616,445.60
  5. Step 5: Solve for x
    x = 13,500,616,445.60/129,349.38
  6. Step 6: Final answer
    x = 104,373.26

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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.