Home / 172,128.20-258,192.51-53,800.16

Finding the Fourth Proportional to 172,128.20, 258,192.51 and 53,800.16

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Solution

The fourth proportional to 172,128.20, 258,192.51 and 53,800.16 is: 80,700.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,128.20 : 258,192.51 = 53,800.16 : x
  2. Step 2: Convert to fraction form
    172,128.20/258,192.51 = 53,800.16/x
  3. Step 3: Cross multiply
    172,128.20x = 258,192.51 × 53,800.16
  4. Step 4: Simplify right side
    172,128.20x = 13,890,798,348.80
  5. Step 5: Solve for x
    x = 13,890,798,348.80/172,128.20
  6. Step 6: Final answer
    x = 80,700.31

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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.