Home / 100,926.77-139,278.29-55,603.71

Finding the Fourth Proportional to 100,926.77, 139,278.29 and 55,603.71

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Solution

The fourth proportional to 100,926.77, 139,278.29 and 55,603.71 is: 76,732.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,926.77 : 139,278.29 = 55,603.71 : x
  2. Step 2: Convert to fraction form
    100,926.77/139,278.29 = 55,603.71/x
  3. Step 3: Cross multiply
    100,926.77x = 139,278.29 × 55,603.71
  4. Step 4: Simplify right side
    100,926.77x = 7,744,389,785.47
  5. Step 5: Solve for x
    x = 7,744,389,785.47/100,926.77
  6. Step 6: Final answer
    x = 76,732.76

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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.