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Finding the Fourth Proportional to 180,590.92, 270,889.04 and 85,830.77

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Solution

The fourth proportional to 180,590.92, 270,889.04 and 85,830.77 is: 128,747.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,590.92 : 270,889.04 = 85,830.77 : x
  2. Step 2: Convert to fraction form
    180,590.92/270,889.04 = 85,830.77/x
  3. Step 3: Cross multiply
    180,590.92x = 270,889.04 × 85,830.77
  4. Step 4: Simplify right side
    180,590.92x = 23,250,615,779.56
  5. Step 5: Solve for x
    x = 23,250,615,779.56/180,590.92
  6. Step 6: Final answer
    x = 128,747.43

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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.