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Finding the Fourth Proportional to 129,998.34, 179,397.72 and 73,413.36

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Solution

The fourth proportional to 129,998.34, 179,397.72 and 73,413.36 is: 101,310.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,998.34 : 179,397.72 = 73,413.36 : x
  2. Step 2: Convert to fraction form
    129,998.34/179,397.72 = 73,413.36/x
  3. Step 3: Cross multiply
    129,998.34x = 179,397.72 × 73,413.36
  4. Step 4: Simplify right side
    129,998.34x = 13,170,189,401.54
  5. Step 5: Solve for x
    x = 13,170,189,401.54/129,998.34
  6. Step 6: Final answer
    x = 101,310.44

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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.