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Finding the Fourth Proportional to 155,850.68, 215,073.98 and 84,230.60

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Solution

The fourth proportional to 155,850.68, 215,073.98 and 84,230.60 is: 116,238.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,850.68 : 215,073.98 = 84,230.60 : x
  2. Step 2: Convert to fraction form
    155,850.68/215,073.98 = 84,230.60/x
  3. Step 3: Cross multiply
    155,850.68x = 215,073.98 × 84,230.60
  4. Step 4: Simplify right side
    155,850.68x = 18,115,810,379.79
  5. Step 5: Solve for x
    x = 18,115,810,379.79/155,850.68
  6. Step 6: Final answer
    x = 116,238.25

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1.5x scale

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.