Home / 211,459.35-291,787.01-120,821.18

Finding the Fourth Proportional to 211,459.35, 291,787.01 and 120,821.18

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Solution

The fourth proportional to 211,459.35, 291,787.01 and 120,821.18 is: 166,717.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,459.35 : 291,787.01 = 120,821.18 : x
  2. Step 2: Convert to fraction form
    211,459.35/291,787.01 = 120,821.18/x
  3. Step 3: Cross multiply
    211,459.35x = 291,787.01 × 120,821.18
  4. Step 4: Simplify right side
    211,459.35x = 35,254,048,793.83
  5. Step 5: Solve for x
    x = 35,254,048,793.83/211,459.35
  6. Step 6: Final answer
    x = 166,717.86

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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.