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Finding the Fourth Proportional to 131,099.92, 180,924.30 and 73,740.40

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Solution

The fourth proportional to 131,099.92, 180,924.30 and 73,740.40 is: 101,765.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,099.92 : 180,924.30 = 73,740.40 : x
  2. Step 2: Convert to fraction form
    131,099.92/180,924.30 = 73,740.40/x
  3. Step 3: Cross multiply
    131,099.92x = 180,924.30 × 73,740.40
  4. Step 4: Simplify right side
    131,099.92x = 13,341,430,251.72
  5. Step 5: Solve for x
    x = 13,341,430,251.72/131,099.92
  6. Step 6: Final answer
    x = 101,765.36

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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.