Home / 81,099.60-111,861.12-74,407.38

Finding the Fourth Proportional to 81,099.60, 111,861.12 and 74,407.38

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Solution

The fourth proportional to 81,099.60, 111,861.12 and 74,407.38 is: 102,630.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,099.60 : 111,861.12 = 74,407.38 : x
  2. Step 2: Convert to fraction form
    81,099.60/111,861.12 = 74,407.38/x
  3. Step 3: Cross multiply
    81,099.60x = 111,861.12 × 74,407.38
  4. Step 4: Simplify right side
    81,099.60x = 8,323,292,863.07
  5. Step 5: Solve for x
    x = 8,323,292,863.07/81,099.60
  6. Step 6: Final answer
    x = 102,630.50

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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.