Home / 156,711.96-216,209.10-100,155.96

Finding the Fourth Proportional to 156,711.96, 216,209.10 and 100,155.96

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Solution

The fourth proportional to 156,711.96, 216,209.10 and 100,155.96 is: 138,181.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,711.96 : 216,209.10 = 100,155.96 : x
  2. Step 2: Convert to fraction form
    156,711.96/216,209.10 = 100,155.96/x
  3. Step 3: Cross multiply
    156,711.96x = 216,209.10 × 100,155.96
  4. Step 4: Simplify right side
    156,711.96x = 21,654,629,971.24
  5. Step 5: Solve for x
    x = 21,654,629,971.24/156,711.96
  6. Step 6: Final answer
    x = 138,181.09

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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.