Home / 124,680.75-172,116.06-79,420.77

Finding the Fourth Proportional to 124,680.75, 172,116.06 and 79,420.77

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Solution

The fourth proportional to 124,680.75, 172,116.06 and 79,420.77 is: 109,636.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,680.75 : 172,116.06 = 79,420.77 : x
  2. Step 2: Convert to fraction form
    124,680.75/172,116.06 = 79,420.77/x
  3. Step 3: Cross multiply
    124,680.75x = 172,116.06 × 79,420.77
  4. Step 4: Simplify right side
    124,680.75x = 13,669,590,014.57
  5. Step 5: Solve for x
    x = 13,669,590,014.57/124,680.75
  6. Step 6: Final answer
    x = 109,636.73

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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.