Home / 100,332.41-138,457.99-55,009.64

Finding the Fourth Proportional to 100,332.41, 138,457.99 and 55,009.64

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Solution

The fourth proportional to 100,332.41, 138,457.99 and 55,009.64 is: 75,912.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,332.41 : 138,457.99 = 55,009.64 : x
  2. Step 2: Convert to fraction form
    100,332.41/138,457.99 = 55,009.64/x
  3. Step 3: Cross multiply
    100,332.41x = 138,457.99 × 55,009.64
  4. Step 4: Simplify right side
    100,332.41x = 7,616,524,393.64
  5. Step 5: Solve for x
    x = 7,616,524,393.64/100,332.41
  6. Step 6: Final answer
    x = 75,912.91

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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.