Home / 126,720.98-190,123.68-42,489.50

Finding the Fourth Proportional to 126,720.98, 190,123.68 and 42,489.50

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Solution

The fourth proportional to 126,720.98, 190,123.68 and 42,489.50 is: 63,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,720.98 : 190,123.68 = 42,489.50 : x
  2. Step 2: Convert to fraction form
    126,720.98/190,123.68 = 42,489.50/x
  3. Step 3: Cross multiply
    126,720.98x = 190,123.68 × 42,489.50
  4. Step 4: Simplify right side
    126,720.98x = 8,078,260,101.36
  5. Step 5: Solve for x
    x = 8,078,260,101.36/126,720.98
  6. Step 6: Final answer
    x = 63,748.40

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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.