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Finding the Fourth Proportional to 172,507.04, 258,790.08 and 79,020.80

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Solution

The fourth proportional to 172,507.04, 258,790.08 and 79,020.80 is: 118,544.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,507.04 : 258,790.08 = 79,020.80 : x
  2. Step 2: Convert to fraction form
    172,507.04/258,790.08 = 79,020.80/x
  3. Step 3: Cross multiply
    172,507.04x = 258,790.08 × 79,020.80
  4. Step 4: Simplify right side
    172,507.04x = 20,449,799,153.66
  5. Step 5: Solve for x
    x = 20,449,799,153.66/172,507.04
  6. Step 6: Final answer
    x = 118,544.72

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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.