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Finding the Fourth Proportional to 172,087.74, 258,131.06 and 45,740.70

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Solution

The fourth proportional to 172,087.74, 258,131.06 and 45,740.70 is: 68,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,087.74 : 258,131.06 = 45,740.70 : x
  2. Step 2: Convert to fraction form
    172,087.74/258,131.06 = 45,740.70/x
  3. Step 3: Cross multiply
    172,087.74x = 258,131.06 × 45,740.70
  4. Step 4: Simplify right side
    172,087.74x = 11,807,095,376.14
  5. Step 5: Solve for x
    x = 11,807,095,376.14/172,087.74
  6. Step 6: Final answer
    x = 68,610.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.