Home / 126,005.80-188,814.30-109,287.40

Finding the Fourth Proportional to 126,005.80, 188,814.30 and 109,287.40

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Solution

The fourth proportional to 126,005.80, 188,814.30 and 109,287.40 is: 163,762.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,005.80 : 188,814.30 = 109,287.40 : x
  2. Step 2: Convert to fraction form
    126,005.80/188,814.30 = 109,287.40/x
  3. Step 3: Cross multiply
    126,005.80x = 188,814.30 × 109,287.40
  4. Step 4: Simplify right side
    126,005.80x = 20,635,023,929.82
  5. Step 5: Solve for x
    x = 20,635,023,929.82/126,005.80
  6. Step 6: Final answer
    x = 163,762.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.