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Finding the Fourth Proportional to 135,448.65, 186,920.73 and 75,020.49

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Solution

The fourth proportional to 135,448.65, 186,920.73 and 75,020.49 is: 103,529.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,448.65 : 186,920.73 = 75,020.49 : x
  2. Step 2: Convert to fraction form
    135,448.65/186,920.73 = 75,020.49/x
  3. Step 3: Cross multiply
    135,448.65x = 186,920.73 × 75,020.49
  4. Step 4: Simplify right side
    135,448.65x = 14,022,884,755.76
  5. Step 5: Solve for x
    x = 14,022,884,755.76/135,448.65
  6. Step 6: Final answer
    x = 103,529.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.