Home / 129,748.25-178,984.60-112,714.25

Finding the Fourth Proportional to 129,748.25, 178,984.60 and 112,714.25

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Solution

The fourth proportional to 129,748.25, 178,984.60 and 112,714.25 is: 155,486.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,748.25 : 178,984.60 = 112,714.25 : x
  2. Step 2: Convert to fraction form
    129,748.25/178,984.60 = 112,714.25/x
  3. Step 3: Cross multiply
    129,748.25x = 178,984.60 × 112,714.25
  4. Step 4: Simplify right side
    129,748.25x = 20,174,115,451.82
  5. Step 5: Solve for x
    x = 20,174,115,451.82/129,748.25
  6. Step 6: Final answer
    x = 155,486.61

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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.