Home / 100,886.28-139,217.61-55,555.41

Finding the Fourth Proportional to 100,886.28, 139,217.61 and 55,555.41

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Solution

The fourth proportional to 100,886.28, 139,217.61 and 55,555.41 is: 76,663.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,886.28 : 139,217.61 = 55,555.41 : x
  2. Step 2: Convert to fraction form
    100,886.28/139,217.61 = 55,555.41/x
  3. Step 3: Cross multiply
    100,886.28x = 139,217.61 × 55,555.41
  4. Step 4: Simplify right side
    100,886.28x = 7,734,291,402.77
  5. Step 5: Solve for x
    x = 7,734,291,402.77/100,886.28
  6. Step 6: Final answer
    x = 76,663.46

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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.