Home / 103,881.78-143,358.53-58,561.98

Finding the Fourth Proportional to 103,881.78, 143,358.53 and 58,561.98

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Solution

The fourth proportional to 103,881.78, 143,358.53 and 58,561.98 is: 80,816.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,881.78 : 143,358.53 = 58,561.98 : x
  2. Step 2: Convert to fraction form
    103,881.78/143,358.53 = 58,561.98/x
  3. Step 3: Cross multiply
    103,881.78x = 143,358.53 × 58,561.98
  4. Step 4: Simplify right side
    103,881.78x = 8,395,359,513.09
  5. Step 5: Solve for x
    x = 8,395,359,513.09/103,881.78
  6. Step 6: Final answer
    x = 80,816.48

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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.