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Finding the Fourth Proportional to 126,057.60, 189,073.60 and 42,950.40

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Solution

The fourth proportional to 126,057.60, 189,073.60 and 42,950.40 is: 64,421.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,057.60 : 189,073.60 = 42,950.40 : x
  2. Step 2: Convert to fraction form
    126,057.60/189,073.60 = 42,950.40/x
  3. Step 3: Cross multiply
    126,057.60x = 189,073.60 × 42,950.40
  4. Step 4: Simplify right side
    126,057.60x = 8,120,786,749.44
  5. Step 5: Solve for x
    x = 8,120,786,749.44/126,057.60
  6. Step 6: Final answer
    x = 64,421.24

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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.