Home / 211,461.45-291,814.07-120,816.71

Finding the Fourth Proportional to 211,461.45, 291,814.07 and 120,816.71

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Solution

The fourth proportional to 211,461.45, 291,814.07 and 120,816.71 is: 166,725.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,461.45 : 291,814.07 = 120,816.71 : x
  2. Step 2: Convert to fraction form
    211,461.45/291,814.07 = 120,816.71/x
  3. Step 3: Cross multiply
    211,461.45x = 291,814.07 × 120,816.71
  4. Step 4: Simplify right side
    211,461.45x = 35,256,015,869.11
  5. Step 5: Solve for x
    x = 35,256,015,869.11/211,461.45
  6. Step 6: Final answer
    x = 166,725.50

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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.