Home / 189,453.28-261,451.85-103,417.36

Finding the Fourth Proportional to 189,453.28, 261,451.85 and 103,417.36

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Solution

The fourth proportional to 189,453.28, 261,451.85 and 103,417.36 is: 142,719.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,453.28 : 261,451.85 = 103,417.36 : x
  2. Step 2: Convert to fraction form
    189,453.28/261,451.85 = 103,417.36/x
  3. Step 3: Cross multiply
    189,453.28x = 261,451.85 × 103,417.36
  4. Step 4: Simplify right side
    189,453.28x = 27,038,659,650.55
  5. Step 5: Solve for x
    x = 27,038,659,650.55/189,453.28
  6. Step 6: Final answer
    x = 142,719.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.