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Finding the Fourth Proportional to 243,166.08, 364,770 and 85,380.96

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Solution

The fourth proportional to 243,166.08, 364,770 and 85,380.96 is: 128,078.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,166.08 : 364,770 = 85,380.96 : x
  2. Step 2: Convert to fraction form
    243,166.08/364,770 = 85,380.96/x
  3. Step 3: Cross multiply
    243,166.08x = 364,770 × 85,380.96
  4. Step 4: Simplify right side
    243,166.08x = 31,144,412,779.20
  5. Step 5: Solve for x
    x = 31,144,412,779.20/243,166.08
  6. Step 6: Final answer
    x = 128,078.77

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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.