Home / 100,953.10-139,313.40-55,635.28

Finding the Fourth Proportional to 100,953.10, 139,313.40 and 55,635.28

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Solution

The fourth proportional to 100,953.10, 139,313.40 and 55,635.28 is: 76,775.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,953.10 : 139,313.40 = 55,635.28 : x
  2. Step 2: Convert to fraction form
    100,953.10/139,313.40 = 55,635.28/x
  3. Step 3: Cross multiply
    100,953.10x = 139,313.40 × 55,635.28
  4. Step 4: Simplify right side
    100,953.10x = 7,750,740,016.75
  5. Step 5: Solve for x
    x = 7,750,740,016.75/100,953.10
  6. Step 6: Final answer
    x = 76,775.65

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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.