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Finding the Fourth Proportional to 172,395.40, 258,601.20 and 54,070.60

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Solution

The fourth proportional to 172,395.40, 258,601.20 and 54,070.60 is: 81,108.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,395.40 : 258,601.20 = 54,070.60 : x
  2. Step 2: Convert to fraction form
    172,395.40/258,601.20 = 54,070.60/x
  3. Step 3: Cross multiply
    172,395.40x = 258,601.20 × 54,070.60
  4. Step 4: Simplify right side
    172,395.40x = 13,982,722,044.72
  5. Step 5: Solve for x
    x = 13,982,722,044.72/172,395.40
  6. Step 6: Final answer
    x = 81,108.44

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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.