Home / 101,039.13-139,434.66-55,718.82

Finding the Fourth Proportional to 101,039.13, 139,434.66 and 55,718.82

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Solution

The fourth proportional to 101,039.13, 139,434.66 and 55,718.82 is: 76,892.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,039.13 : 139,434.66 = 55,718.82 : x
  2. Step 2: Convert to fraction form
    101,039.13/139,434.66 = 55,718.82/x
  3. Step 3: Cross multiply
    101,039.13x = 139,434.66 × 55,718.82
  4. Step 4: Simplify right side
    101,039.13x = 7,769,134,722.30
  5. Step 5: Solve for x
    x = 7,769,134,722.30/101,039.13
  6. Step 6: Final answer
    x = 76,892.34

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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.