Home / 100,025.76-138,030.48-55,305.12

Finding the Fourth Proportional to 100,025.76, 138,030.48 and 55,305.12

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Solution

The fourth proportional to 100,025.76, 138,030.48 and 55,305.12 is: 76,318.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,025.76 : 138,030.48 = 55,305.12 : x
  2. Step 2: Convert to fraction form
    100,025.76/138,030.48 = 55,305.12/x
  3. Step 3: Cross multiply
    100,025.76x = 138,030.48 × 55,305.12
  4. Step 4: Simplify right side
    100,025.76x = 7,633,792,260.06
  5. Step 5: Solve for x
    x = 7,633,792,260.06/100,025.76
  6. Step 6: Final answer
    x = 76,318.26

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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.