Home / 131,279.10-196,590.60-86,664.30

Finding the Fourth Proportional to 131,279.10, 196,590.60 and 86,664.30

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Solution

The fourth proportional to 131,279.10, 196,590.60 and 86,664.30 is: 129,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,279.10 : 196,590.60 = 86,664.30 : x
  2. Step 2: Convert to fraction form
    131,279.10/196,590.60 = 86,664.30/x
  3. Step 3: Cross multiply
    131,279.10x = 196,590.60 × 86,664.30
  4. Step 4: Simplify right side
    131,279.10x = 17,037,386,735.58
  5. Step 5: Solve for x
    x = 17,037,386,735.58/131,279.10
  6. Step 6: Final answer
    x = 129,779.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.