Home / 156,815.88-216,406.08-85,195.86

Finding the Fourth Proportional to 156,815.88, 216,406.08 and 85,195.86

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Solution

The fourth proportional to 156,815.88, 216,406.08 and 85,195.86 is: 117,570.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,815.88 : 216,406.08 = 85,195.86 : x
  2. Step 2: Convert to fraction form
    156,815.88/216,406.08 = 85,195.86/x
  3. Step 3: Cross multiply
    156,815.88x = 216,406.08 × 85,195.86
  4. Step 4: Simplify right side
    156,815.88x = 18,436,902,094.83
  5. Step 5: Solve for x
    x = 18,436,902,094.83/156,815.88
  6. Step 6: Final answer
    x = 117,570.38

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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.