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Finding the Fourth Proportional to 172,365.70, 258,548.55 and 74,061.70

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Solution

The fourth proportional to 172,365.70, 258,548.55 and 74,061.70 is: 111,092.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,365.70 : 258,548.55 = 74,061.70 : x
  2. Step 2: Convert to fraction form
    172,365.70/258,548.55 = 74,061.70/x
  3. Step 3: Cross multiply
    172,365.70x = 258,548.55 × 74,061.70
  4. Step 4: Simplify right side
    172,365.70x = 19,148,545,145.54
  5. Step 5: Solve for x
    x = 19,148,545,145.54/172,365.70
  6. Step 6: Final answer
    x = 111,092.55

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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.