Home / 103,172.67-142,403.58-62,908.61

Finding the Fourth Proportional to 103,172.67, 142,403.58 and 62,908.61

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Solution

The fourth proportional to 103,172.67, 142,403.58 and 62,908.61 is: 86,829.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,172.67 : 142,403.58 = 62,908.61 : x
  2. Step 2: Convert to fraction form
    103,172.67/142,403.58 = 62,908.61/x
  3. Step 3: Cross multiply
    103,172.67x = 142,403.58 × 62,908.61
  4. Step 4: Simplify right side
    103,172.67x = 8,958,410,564.81
  5. Step 5: Solve for x
    x = 8,958,410,564.81/103,172.67
  6. Step 6: Final answer
    x = 86,829.30

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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.