Home / 135,257.27-186,638.81-77,915.34

Finding the Fourth Proportional to 135,257.27, 186,638.81 and 77,915.34

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Solution

The fourth proportional to 135,257.27, 186,638.81 and 77,915.34 is: 107,513.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,257.27 : 186,638.81 = 77,915.34 : x
  2. Step 2: Convert to fraction form
    135,257.27/186,638.81 = 77,915.34/x
  3. Step 3: Cross multiply
    135,257.27x = 186,638.81 × 77,915.34
  4. Step 4: Simplify right side
    135,257.27x = 14,542,025,948.77
  5. Step 5: Solve for x
    x = 14,542,025,948.77/135,257.27
  6. Step 6: Final answer
    x = 107,513.83

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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.