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Finding the Fourth Proportional to 172,616.04, 258,850.78 and 72,820.84

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Solution

The fourth proportional to 172,616.04, 258,850.78 and 72,820.84 is: 109,200.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,616.04 : 258,850.78 = 72,820.84 : x
  2. Step 2: Convert to fraction form
    172,616.04/258,850.78 = 72,820.84/x
  3. Step 3: Cross multiply
    172,616.04x = 258,850.78 × 72,820.84
  4. Step 4: Simplify right side
    172,616.04x = 18,849,731,234.26
  5. Step 5: Solve for x
    x = 18,849,731,234.26/172,616.04
  6. Step 6: Final answer
    x = 109,200.35

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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.