Home / 155,940.18-215,197.32-84,319.57

Finding the Fourth Proportional to 155,940.18, 215,197.32 and 84,319.57

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Solution

The fourth proportional to 155,940.18, 215,197.32 and 84,319.57 is: 116,360.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,940.18 : 215,197.32 = 84,319.57 : x
  2. Step 2: Convert to fraction form
    155,940.18/215,197.32 = 84,319.57/x
  3. Step 3: Cross multiply
    155,940.18x = 215,197.32 × 84,319.57
  4. Step 4: Simplify right side
    155,940.18x = 18,145,345,487.55
  5. Step 5: Solve for x
    x = 18,145,345,487.55/155,940.18
  6. Step 6: Final answer
    x = 116,360.94

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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.