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Finding the Fourth Proportional to 174,763.49, 261,581.39 and 90,407.49

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Solution

The fourth proportional to 174,763.49, 261,581.39 and 90,407.49 is: 135,319.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,763.49 : 261,581.39 = 90,407.49 : x
  2. Step 2: Convert to fraction form
    174,763.49/261,581.39 = 90,407.49/x
  3. Step 3: Cross multiply
    174,763.49x = 261,581.39 × 90,407.49
  4. Step 4: Simplify right side
    174,763.49x = 23,648,916,448.57
  5. Step 5: Solve for x
    x = 23,648,916,448.57/174,763.49
  6. Step 6: Final answer
    x = 135,319.55

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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.