Home / 126,188.70-189,283.05-103,638.30

Finding the Fourth Proportional to 126,188.70, 189,283.05 and 103,638.30

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Solution

The fourth proportional to 126,188.70, 189,283.05 and 103,638.30 is: 155,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,188.70 : 189,283.05 = 103,638.30 : x
  2. Step 2: Convert to fraction form
    126,188.70/189,283.05 = 103,638.30/x
  3. Step 3: Cross multiply
    126,188.70x = 189,283.05 × 103,638.30
  4. Step 4: Simplify right side
    126,188.70x = 19,616,973,520.82
  5. Step 5: Solve for x
    x = 19,616,973,520.82/126,188.70
  6. Step 6: Final answer
    x = 155,457.45

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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.