Home / 128,118.04-192,174.42-42,735.08

Finding the Fourth Proportional to 128,118.04, 192,174.42 and 42,735.08

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Solution

The fourth proportional to 128,118.04, 192,174.42 and 42,735.08 is: 64,101.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,118.04 : 192,174.42 = 42,735.08 : x
  2. Step 2: Convert to fraction form
    128,118.04/192,174.42 = 42,735.08/x
  3. Step 3: Cross multiply
    128,118.04x = 192,174.42 × 42,735.08
  4. Step 4: Simplify right side
    128,118.04x = 8,212,589,212.65
  5. Step 5: Solve for x
    x = 8,212,589,212.65/128,118.04
  6. Step 6: Final answer
    x = 64,101.74

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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.