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Finding the Fourth Proportional to 128,491.60, 192,744.96 and 49,606.24

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Solution

The fourth proportional to 128,491.60, 192,744.96 and 49,606.24 is: 74,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,491.60 : 192,744.96 = 49,606.24 : x
  2. Step 2: Convert to fraction form
    128,491.60/192,744.96 = 49,606.24/x
  3. Step 3: Cross multiply
    128,491.60x = 192,744.96 × 49,606.24
  4. Step 4: Simplify right side
    128,491.60x = 9,561,352,744.55
  5. Step 5: Solve for x
    x = 9,561,352,744.55/128,491.60
  6. Step 6: Final answer
    x = 74,412.28

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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.