Home / 113,139.35-156,114.97-65,383.49

Finding the Fourth Proportional to 113,139.35, 156,114.97 and 65,383.49

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Solution

The fourth proportional to 113,139.35, 156,114.97 and 65,383.49 is: 90,219.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,139.35 : 156,114.97 = 65,383.49 : x
  2. Step 2: Convert to fraction form
    113,139.35/156,114.97 = 65,383.49/x
  3. Step 3: Cross multiply
    113,139.35x = 156,114.97 × 65,383.49
  4. Step 4: Simplify right side
    113,139.35x = 10,207,340,635.81
  5. Step 5: Solve for x
    x = 10,207,340,635.81/113,139.35
  6. Step 6: Final answer
    x = 90,219.19

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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.