Home / 100,869.57-139,294.49-63,209.43

Finding the Fourth Proportional to 100,869.57, 139,294.49 and 63,209.43

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Solution

The fourth proportional to 100,869.57, 139,294.49 and 63,209.43 is: 87,288.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,869.57 : 139,294.49 = 63,209.43 : x
  2. Step 2: Convert to fraction form
    100,869.57/139,294.49 = 63,209.43/x
  3. Step 3: Cross multiply
    100,869.57x = 139,294.49 × 63,209.43
  4. Step 4: Simplify right side
    100,869.57x = 8,804,724,998.99
  5. Step 5: Solve for x
    x = 8,804,724,998.99/100,869.57
  6. Step 6: Final answer
    x = 87,288.22

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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.