Home / 100,864.65-139,187.69-55,534.02

Finding the Fourth Proportional to 100,864.65, 139,187.69 and 55,534.02

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Solution

The fourth proportional to 100,864.65, 139,187.69 and 55,534.02 is: 76,633.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,864.65 : 139,187.69 = 55,534.02 : x
  2. Step 2: Convert to fraction form
    100,864.65/139,187.69 = 55,534.02/x
  3. Step 3: Cross multiply
    100,864.65x = 139,187.69 × 55,534.02
  4. Step 4: Simplify right side
    100,864.65x = 7,729,651,682.54
  5. Step 5: Solve for x
    x = 7,729,651,682.54/100,864.65
  6. Step 6: Final answer
    x = 76,633.90

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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.