Home / 103,961.78-143,451.33-58,637.78

Finding the Fourth Proportional to 103,961.78, 143,451.33 and 58,637.78

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Solution

The fourth proportional to 103,961.78, 143,451.33 and 58,637.78 is: 80,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,961.78 : 143,451.33 = 58,637.78 : x
  2. Step 2: Convert to fraction form
    103,961.78/143,451.33 = 58,637.78/x
  3. Step 3: Cross multiply
    103,961.78x = 143,451.33 × 58,637.78
  4. Step 4: Simplify right side
    103,961.78x = 8,411,666,811.99
  5. Step 5: Solve for x
    x = 8,411,666,811.99/103,961.78
  6. Step 6: Final answer
    x = 80,911.15

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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.