Home / 103,669.60-143,108.19-69,697.80

Finding the Fourth Proportional to 103,669.60, 143,108.19 and 69,697.80

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Solution

The fourth proportional to 103,669.60, 143,108.19 and 69,697.80 is: 96,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,669.60 : 143,108.19 = 69,697.80 : x
  2. Step 2: Convert to fraction form
    103,669.60/143,108.19 = 69,697.80/x
  3. Step 3: Cross multiply
    103,669.60x = 143,108.19 × 69,697.80
  4. Step 4: Simplify right side
    103,669.60x = 9,974,326,004.98
  5. Step 5: Solve for x
    x = 9,974,326,004.98/103,669.60
  6. Step 6: Final answer
    x = 96,212.64

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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.