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Finding the Fourth Proportional to 180,279.85, 270,340.86 and 85,537.05

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Solution

The fourth proportional to 180,279.85, 270,340.86 and 85,537.05 is: 128,268.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,279.85 : 270,340.86 = 85,537.05 : x
  2. Step 2: Convert to fraction form
    180,279.85/270,340.86 = 85,537.05/x
  3. Step 3: Cross multiply
    180,279.85x = 270,340.86 × 85,537.05
  4. Step 4: Simplify right side
    180,279.85x = 23,124,159,658.86
  5. Step 5: Solve for x
    x = 23,124,159,658.86/180,279.85
  6. Step 6: Final answer
    x = 128,268.13

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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.