Home / 211,164.57-291,411.81-120,518.72

Finding the Fourth Proportional to 211,164.57, 291,411.81 and 120,518.72

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Solution

The fourth proportional to 211,164.57, 291,411.81 and 120,518.72 is: 166,318.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,164.57 : 291,411.81 = 120,518.72 : x
  2. Step 2: Convert to fraction form
    211,164.57/291,411.81 = 120,518.72/x
  3. Step 3: Cross multiply
    211,164.57x = 291,411.81 × 120,518.72
  4. Step 4: Simplify right side
    211,164.57x = 35,120,576,877.02
  5. Step 5: Solve for x
    x = 35,120,576,877.02/211,164.57
  6. Step 6: Final answer
    x = 166,318.51

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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.