Home / 100,985.28-139,360.24-58,568.96

Finding the Fourth Proportional to 100,985.28, 139,360.24 and 58,568.96

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Solution

The fourth proportional to 100,985.28, 139,360.24 and 58,568.96 is: 80,825.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,985.28 : 139,360.24 = 58,568.96 : x
  2. Step 2: Convert to fraction form
    100,985.28/139,360.24 = 58,568.96/x
  3. Step 3: Cross multiply
    100,985.28x = 139,360.24 × 58,568.96
  4. Step 4: Simplify right side
    100,985.28x = 8,162,184,322.15
  5. Step 5: Solve for x
    x = 8,162,184,322.15/100,985.28
  6. Step 6: Final answer
    x = 80,825.49

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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.