Home / 103,372.51-142,669.49-63,109.61

Finding the Fourth Proportional to 103,372.51, 142,669.49 and 63,109.61

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Solution

The fourth proportional to 103,372.51, 142,669.49 and 63,109.61 is: 87,100.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,372.51 : 142,669.49 = 63,109.61 : x
  2. Step 2: Convert to fraction form
    103,372.51/142,669.49 = 63,109.61/x
  3. Step 3: Cross multiply
    103,372.51x = 142,669.49 × 63,109.61
  4. Step 4: Simplify right side
    103,372.51x = 9,003,815,615.58
  5. Step 5: Solve for x
    x = 9,003,815,615.58/103,372.51
  6. Step 6: Final answer
    x = 87,100.68

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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.