Home / 156,821.35-216,412.32-85,201.96

Finding the Fourth Proportional to 156,821.35, 216,412.32 and 85,201.96

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Solution

The fourth proportional to 156,821.35, 216,412.32 and 85,201.96 is: 117,578.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,821.35 : 216,412.32 = 85,201.96 : x
  2. Step 2: Convert to fraction form
    156,821.35/216,412.32 = 85,201.96/x
  3. Step 3: Cross multiply
    156,821.35x = 216,412.32 × 85,201.96
  4. Step 4: Simplify right side
    156,821.35x = 18,438,753,832.15
  5. Step 5: Solve for x
    x = 18,438,753,832.15/156,821.35
  6. Step 6: Final answer
    x = 117,578.08

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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.