Home / 124,914.76-172,401.21-79,612.88

Finding the Fourth Proportional to 124,914.76, 172,401.21 and 79,612.88

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Solution

The fourth proportional to 124,914.76, 172,401.21 and 79,612.88 is: 109,877.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,914.76 : 172,401.21 = 79,612.88 : x
  2. Step 2: Convert to fraction form
    124,914.76/172,401.21 = 79,612.88/x
  3. Step 3: Cross multiply
    124,914.76x = 172,401.21 × 79,612.88
  4. Step 4: Simplify right side
    124,914.76x = 13,725,355,981.58
  5. Step 5: Solve for x
    x = 13,725,355,981.58/124,914.76
  6. Step 6: Final answer
    x = 109,877.78

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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.