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Finding the Fourth Proportional to 171,503.80, 257,255.70 and 53,187.10

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Solution

The fourth proportional to 171,503.80, 257,255.70 and 53,187.10 is: 79,780.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,503.80 : 257,255.70 = 53,187.10 : x
  2. Step 2: Convert to fraction form
    171,503.80/257,255.70 = 53,187.10/x
  3. Step 3: Cross multiply
    171,503.80x = 257,255.70 × 53,187.10
  4. Step 4: Simplify right side
    171,503.80x = 13,682,684,641.47
  5. Step 5: Solve for x
    x = 13,682,684,641.47/171,503.80
  6. Step 6: Final answer
    x = 79,780.65

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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.