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Finding the Fourth Proportional to 172,321.80, 258,482.70 and 93,589.80

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Solution

The fourth proportional to 172,321.80, 258,482.70 and 93,589.80 is: 140,384.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,321.80 : 258,482.70 = 93,589.80 : x
  2. Step 2: Convert to fraction form
    172,321.80/258,482.70 = 93,589.80/x
  3. Step 3: Cross multiply
    172,321.80x = 258,482.70 × 93,589.80
  4. Step 4: Simplify right side
    172,321.80x = 24,191,344,196.46
  5. Step 5: Solve for x
    x = 24,191,344,196.46/172,321.80
  6. Step 6: Final answer
    x = 140,384.70

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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.