Home / 125,131.50-172,684.63-76,760.10

Finding the Fourth Proportional to 125,131.50, 172,684.63 and 76,760.10

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Solution

The fourth proportional to 125,131.50, 172,684.63 and 76,760.10 is: 105,930.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,131.50 : 172,684.63 = 76,760.10 : x
  2. Step 2: Convert to fraction form
    125,131.50/172,684.63 = 76,760.10/x
  3. Step 3: Cross multiply
    125,131.50x = 172,684.63 × 76,760.10
  4. Step 4: Simplify right side
    125,131.50x = 13,255,289,467.26
  5. Step 5: Solve for x
    x = 13,255,289,467.26/125,131.50
  6. Step 6: Final answer
    x = 105,930.88

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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.