Home / 126,520.24-174,579.84-72,784.72

Finding the Fourth Proportional to 126,520.24, 174,579.84 and 72,784.72

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Solution

The fourth proportional to 126,520.24, 174,579.84 and 72,784.72 is: 100,432.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,520.24 : 174,579.84 = 72,784.72 : x
  2. Step 2: Convert to fraction form
    126,520.24/174,579.84 = 72,784.72/x
  3. Step 3: Cross multiply
    126,520.24x = 174,579.84 × 72,784.72
  4. Step 4: Simplify right side
    126,520.24x = 12,706,744,772.04
  5. Step 5: Solve for x
    x = 12,706,744,772.04/126,520.24
  6. Step 6: Final answer
    x = 100,432.51

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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.