Home / 172,720.10-258,968.88-72,853.58

Finding the Fourth Proportional to 172,720.10, 258,968.88 and 72,853.58

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Solution

The fourth proportional to 172,720.10, 258,968.88 and 72,853.58 is: 109,233.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,720.10 : 258,968.88 = 72,853.58 : x
  2. Step 2: Convert to fraction form
    172,720.10/258,968.88 = 72,853.58/x
  3. Step 3: Cross multiply
    172,720.10x = 258,968.88 × 72,853.58
  4. Step 4: Simplify right side
    172,720.10x = 18,866,810,664.01
  5. Step 5: Solve for x
    x = 18,866,810,664.01/172,720.10
  6. Step 6: Final answer
    x = 109,233.44

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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.