Home / 211,056.20-291,285.30-120,391.40

Finding the Fourth Proportional to 211,056.20, 291,285.30 and 120,391.40

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Solution

The fourth proportional to 211,056.20, 291,285.30 and 120,391.40 is: 166,155.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,056.20 : 291,285.30 = 120,391.40 : x
  2. Step 2: Convert to fraction form
    211,056.20/291,285.30 = 120,391.40/x
  3. Step 3: Cross multiply
    211,056.20x = 291,285.30 × 120,391.40
  4. Step 4: Simplify right side
    211,056.20x = 35,068,245,066.42
  5. Step 5: Solve for x
    x = 35,068,245,066.42/211,056.20
  6. Step 6: Final answer
    x = 166,155.96

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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.