Home / 142,495.68-196,612.20-85,119.60

Finding the Fourth Proportional to 142,495.68, 196,612.20 and 85,119.60

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Solution

The fourth proportional to 142,495.68, 196,612.20 and 85,119.60 is: 117,446.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,495.68 : 196,612.20 = 85,119.60 : x
  2. Step 2: Convert to fraction form
    142,495.68/196,612.20 = 85,119.60/x
  3. Step 3: Cross multiply
    142,495.68x = 196,612.20 × 85,119.60
  4. Step 4: Simplify right side
    142,495.68x = 16,735,551,819.12
  5. Step 5: Solve for x
    x = 16,735,551,819.12/142,495.68
  6. Step 6: Final answer
    x = 117,446.03

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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.