Home / 128,115.36-191,892.24-105,675.84

Finding the Fourth Proportional to 128,115.36, 191,892.24 and 105,675.84

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Solution

The fourth proportional to 128,115.36, 191,892.24 and 105,675.84 is: 158,282.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115.36 : 191,892.24 = 105,675.84 : x
  2. Step 2: Convert to fraction form
    128,115.36/191,892.24 = 105,675.84/x
  3. Step 3: Cross multiply
    128,115.36x = 191,892.24 × 105,675.84
  4. Step 4: Simplify right side
    128,115.36x = 20,278,373,651.48
  5. Step 5: Solve for x
    x = 20,278,373,651.48/128,115.36
  6. Step 6: Final answer
    x = 158,282.14

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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.