Home / 132,415.89-182,720.25-78,690.57

Finding the Fourth Proportional to 132,415.89, 182,720.25 and 78,690.57

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Solution

The fourth proportional to 132,415.89, 182,720.25 and 78,690.57 is: 108,584.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,415.89 : 182,720.25 = 78,690.57 : x
  2. Step 2: Convert to fraction form
    132,415.89/182,720.25 = 78,690.57/x
  3. Step 3: Cross multiply
    132,415.89x = 182,720.25 × 78,690.57
  4. Step 4: Simplify right side
    132,415.89x = 14,378,360,623.04
  5. Step 5: Solve for x
    x = 14,378,360,623.04/132,415.89
  6. Step 6: Final answer
    x = 108,584.86

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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.