Home / 155,930.40-215,184.16-84,311.04

Finding the Fourth Proportional to 155,930.40, 215,184.16 and 84,311.04

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Solution

The fourth proportional to 155,930.40, 215,184.16 and 84,311.04 is: 116,349.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,930.40 : 215,184.16 = 84,311.04 : x
  2. Step 2: Convert to fraction form
    155,930.40/215,184.16 = 84,311.04/x
  3. Step 3: Cross multiply
    155,930.40x = 215,184.16 × 84,311.04
  4. Step 4: Simplify right side
    155,930.40x = 18,142,400,321.13
  5. Step 5: Solve for x
    x = 18,142,400,321.13/155,930.40
  6. Step 6: Final answer
    x = 116,349.35

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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.