Home / 128,175.24-192,284.74-39,426.78

Finding the Fourth Proportional to 128,175.24, 192,284.74 and 39,426.78

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Solution

The fourth proportional to 128,175.24, 192,284.74 and 39,426.78 is: 59,146.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,175.24 : 192,284.74 = 39,426.78 : x
  2. Step 2: Convert to fraction form
    128,175.24/192,284.74 = 39,426.78/x
  3. Step 3: Cross multiply
    128,175.24x = 192,284.74 × 39,426.78
  4. Step 4: Simplify right side
    128,175.24x = 7,581,168,141.34
  5. Step 5: Solve for x
    x = 7,581,168,141.34/128,175.24
  6. Step 6: Final answer
    x = 59,146.90

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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.