Home / 128,136.23-192,171.08-38,157.89

Finding the Fourth Proportional to 128,136.23, 192,171.08 and 38,157.89

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Solution

The fourth proportional to 128,136.23, 192,171.08 and 38,157.89 is: 57,226.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,136.23 : 192,171.08 = 38,157.89 : x
  2. Step 2: Convert to fraction form
    128,136.23/192,171.08 = 38,157.89/x
  3. Step 3: Cross multiply
    128,136.23x = 192,171.08 × 38,157.89
  4. Step 4: Simplify right side
    128,136.23x = 7,332,842,066.36
  5. Step 5: Solve for x
    x = 7,332,842,066.36/128,136.23
  6. Step 6: Final answer
    x = 57,226.92

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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.