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Finding the Fourth Proportional to 156,033.88, 215,326.46 and 84,413.96

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Solution

The fourth proportional to 156,033.88, 215,326.46 and 84,413.96 is: 116,491.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,033.88 : 215,326.46 = 84,413.96 : x
  2. Step 2: Convert to fraction form
    156,033.88/215,326.46 = 84,413.96/x
  3. Step 3: Cross multiply
    156,033.88x = 215,326.46 × 84,413.96
  4. Step 4: Simplify right side
    156,033.88x = 18,176,559,181.38
  5. Step 5: Solve for x
    x = 18,176,559,181.38/156,033.88
  6. Step 6: Final answer
    x = 116,491.11

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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.