Home / 101,008.11-139,385.66-55,686.09

Finding the Fourth Proportional to 101,008.11, 139,385.66 and 55,686.09

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Solution

The fourth proportional to 101,008.11, 139,385.66 and 55,686.09 is: 76,843.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,008.11 : 139,385.66 = 55,686.09 : x
  2. Step 2: Convert to fraction form
    101,008.11/139,385.66 = 55,686.09/x
  3. Step 3: Cross multiply
    101,008.11x = 139,385.66 × 55,686.09
  4. Step 4: Simplify right side
    101,008.11x = 7,761,842,129.04
  5. Step 5: Solve for x
    x = 7,761,842,129.04/101,008.11
  6. Step 6: Final answer
    x = 76,843.75

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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.