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Finding the Fourth Proportional to 163,941.66, 245,911.12 and 45,612.66

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Solution

The fourth proportional to 163,941.66, 245,911.12 and 45,612.66 is: 68,418.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,941.66 : 245,911.12 = 45,612.66 : x
  2. Step 2: Convert to fraction form
    163,941.66/245,911.12 = 45,612.66/x
  3. Step 3: Cross multiply
    163,941.66x = 245,911.12 × 45,612.66
  4. Step 4: Simplify right side
    163,941.66x = 11,216,660,306.78
  5. Step 5: Solve for x
    x = 11,216,660,306.78/163,941.66
  6. Step 6: Final answer
    x = 68,418.61

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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.