Home / 100,871.20-139,140.24-62,644

Finding the Fourth Proportional to 100,871.20, 139,140.24 and 62,644

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Solution

The fourth proportional to 100,871.20, 139,140.24 and 62,644 is: 86,410.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,871.20 : 139,140.24 = 62,644 : x
  2. Step 2: Convert to fraction form
    100,871.20/139,140.24 = 62,644/x
  3. Step 3: Cross multiply
    100,871.20x = 139,140.24 × 62,644
  4. Step 4: Simplify right side
    100,871.20x = 8,716,301,194.56
  5. Step 5: Solve for x
    x = 8,716,301,194.56/100,871.20
  6. Step 6: Final answer
    x = 86,410.21

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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.