Home / 101,121.12-139,503.60-63,388.08

Finding the Fourth Proportional to 101,121.12, 139,503.60 and 63,388.08

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Solution

The fourth proportional to 101,121.12, 139,503.60 and 63,388.08 is: 87,448.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,121.12 : 139,503.60 = 63,388.08 : x
  2. Step 2: Convert to fraction form
    101,121.12/139,503.60 = 63,388.08/x
  3. Step 3: Cross multiply
    101,121.12x = 139,503.60 × 63,388.08
  4. Step 4: Simplify right side
    101,121.12x = 8,842,865,357.09
  5. Step 5: Solve for x
    x = 8,842,865,357.09/101,121.12
  6. Step 6: Final answer
    x = 87,448.25

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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.