Home / 126,180.70-189,271.05-103,630.30

Finding the Fourth Proportional to 126,180.70, 189,271.05 and 103,630.30

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Solution

The fourth proportional to 126,180.70, 189,271.05 and 103,630.30 is: 155,445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,180.70 : 189,271.05 = 103,630.30 : x
  2. Step 2: Convert to fraction form
    126,180.70/189,271.05 = 103,630.30/x
  3. Step 3: Cross multiply
    126,180.70x = 189,271.05 × 103,630.30
  4. Step 4: Simplify right side
    126,180.70x = 19,614,215,692.82
  5. Step 5: Solve for x
    x = 19,614,215,692.82/126,180.70
  6. Step 6: Final answer
    x = 155,445.45

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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.