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Finding the Fourth Proportional to 150,503.81, 207,701.82 and 90,062.96

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Solution

The fourth proportional to 150,503.81, 207,701.82 and 90,062.96 is: 124,290.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,503.81 : 207,701.82 = 90,062.96 : x
  2. Step 2: Convert to fraction form
    150,503.81/207,701.82 = 90,062.96/x
  3. Step 3: Cross multiply
    150,503.81x = 207,701.82 × 90,062.96
  4. Step 4: Simplify right side
    150,503.81x = 18,706,239,668.08
  5. Step 5: Solve for x
    x = 18,706,239,668.08/150,503.81
  6. Step 6: Final answer
    x = 124,290.81

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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.