Home / 126,410.40-189,615.60-70,999.20

Finding the Fourth Proportional to 126,410.40, 189,615.60 and 70,999.20

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Solution

The fourth proportional to 126,410.40, 189,615.60 and 70,999.20 is: 106,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,410.40 : 189,615.60 = 70,999.20 : x
  2. Step 2: Convert to fraction form
    126,410.40/189,615.60 = 70,999.20/x
  3. Step 3: Cross multiply
    126,410.40x = 189,615.60 × 70,999.20
  4. Step 4: Simplify right side
    126,410.40x = 13,462,555,907.52
  5. Step 5: Solve for x
    x = 13,462,555,907.52/126,410.40
  6. Step 6: Final answer
    x = 106,498.80

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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.