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Finding the Fourth Proportional to 163,781.48, 245,670.78 and 45,452.82

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Solution

The fourth proportional to 163,781.48, 245,670.78 and 45,452.82 is: 68,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,781.48 : 245,670.78 = 45,452.82 : x
  2. Step 2: Convert to fraction form
    163,781.48/245,670.78 = 45,452.82/x
  3. Step 3: Cross multiply
    163,781.48x = 245,670.78 × 45,452.82
  4. Step 4: Simplify right side
    163,781.48x = 11,166,429,742.60
  5. Step 5: Solve for x
    x = 11,166,429,742.60/163,781.48
  6. Step 6: Final answer
    x = 68,178.83

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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.