Home / 155,941.15-215,198.64-84,321

Finding the Fourth Proportional to 155,941.15, 215,198.64 and 84,321

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Solution

The fourth proportional to 155,941.15, 215,198.64 and 84,321 is: 116,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,941.15 : 215,198.64 = 84,321 : x
  2. Step 2: Convert to fraction form
    155,941.15/215,198.64 = 84,321/x
  3. Step 3: Cross multiply
    155,941.15x = 215,198.64 × 84,321
  4. Step 4: Simplify right side
    155,941.15x = 18,145,764,167.71
  5. Step 5: Solve for x
    x = 18,145,764,167.71/155,941.15
  6. Step 6: Final answer
    x = 116,362.90

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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.