Home / 124,680.50-172,115.74-79,420.54

Finding the Fourth Proportional to 124,680.50, 172,115.74 and 79,420.54

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Solution

The fourth proportional to 124,680.50, 172,115.74 and 79,420.54 is: 109,636.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,680.50 : 172,115.74 = 79,420.54 : x
  2. Step 2: Convert to fraction form
    124,680.50/172,115.74 = 79,420.54/x
  3. Step 3: Cross multiply
    124,680.50x = 172,115.74 × 79,420.54
  4. Step 4: Simplify right side
    124,680.50x = 13,669,525,013.30
  5. Step 5: Solve for x
    x = 13,669,525,013.30/124,680.50
  6. Step 6: Final answer
    x = 109,636.43

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1.5x scale

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.