Home / 168,763.40-253,145.10-105,777.80

Finding the Fourth Proportional to 168,763.40, 253,145.10 and 105,777.80

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Solution

The fourth proportional to 168,763.40, 253,145.10 and 105,777.80 is: 158,666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,763.40 : 253,145.10 = 105,777.80 : x
  2. Step 2: Convert to fraction form
    168,763.40/253,145.10 = 105,777.80/x
  3. Step 3: Cross multiply
    168,763.40x = 253,145.10 × 105,777.80
  4. Step 4: Simplify right side
    168,763.40x = 26,777,131,758.78
  5. Step 5: Solve for x
    x = 26,777,131,758.78/168,763.40
  6. Step 6: Final answer
    x = 158,666.70

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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.