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Finding the Fourth Proportional to 100,497.90, 150,781.26 and 63,012.72

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Solution

The fourth proportional to 100,497.90, 150,781.26 and 63,012.72 is: 94,540.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,497.90 : 150,781.26 = 63,012.72 : x
  2. Step 2: Convert to fraction form
    100,497.90/150,781.26 = 63,012.72/x
  3. Step 3: Cross multiply
    100,497.90x = 150,781.26 × 63,012.72
  4. Step 4: Simplify right side
    100,497.90x = 9,501,137,317.63
  5. Step 5: Solve for x
    x = 9,501,137,317.63/100,497.90
  6. Step 6: Final answer
    x = 94,540.66

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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.