Home / 122,439.86-168,954.04-68,730.78

Finding the Fourth Proportional to 122,439.86, 168,954.04 and 68,730.78

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Solution

The fourth proportional to 122,439.86, 168,954.04 and 68,730.78 is: 94,841.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,439.86 : 168,954.04 = 68,730.78 : x
  2. Step 2: Convert to fraction form
    122,439.86/168,954.04 = 68,730.78/x
  3. Step 3: Cross multiply
    122,439.86x = 168,954.04 × 68,730.78
  4. Step 4: Simplify right side
    122,439.86x = 11,612,342,953.35
  5. Step 5: Solve for x
    x = 11,612,342,953.35/122,439.86
  6. Step 6: Final answer
    x = 94,841.20

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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.