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Finding the Fourth Proportional to 155,993.56, 215,271.12 and 84,373.58

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Solution

The fourth proportional to 155,993.56, 215,271.12 and 84,373.58 is: 116,435.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,993.56 : 215,271.12 = 84,373.58 : x
  2. Step 2: Convert to fraction form
    155,993.56/215,271.12 = 84,373.58/x
  3. Step 3: Cross multiply
    155,993.56x = 215,271.12 × 84,373.58
  4. Step 4: Simplify right side
    155,993.56x = 18,163,195,065.01
  5. Step 5: Solve for x
    x = 18,163,195,065.01/155,993.56
  6. Step 6: Final answer
    x = 116,435.54

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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.