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Finding the Fourth Proportional to 130,194.72, 179,660.21 and 72,824.10

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Solution

The fourth proportional to 130,194.72, 179,660.21 and 72,824.10 is: 100,492.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,194.72 : 179,660.21 = 72,824.10 : x
  2. Step 2: Convert to fraction form
    130,194.72/179,660.21 = 72,824.10/x
  3. Step 3: Cross multiply
    130,194.72x = 179,660.21 × 72,824.10
  4. Step 4: Simplify right side
    130,194.72x = 13,083,593,099.06
  5. Step 5: Solve for x
    x = 13,083,593,099.06/130,194.72
  6. Step 6: Final answer
    x = 100,492.50

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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.